What are /r/chemistry's favorite Products & Services?

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I guess it's more physics than chemistry, but about a year ago I made an app to draw electron orbitals for an organic chemistry class - I was having some trouble connecting the drawings of isosurfaces you mostly see with the idea of a probability cloud, so I made my own volume rendered version. It only does non-hybridized hydrogen orbitals and doesn't simulate bonding or anything, but I still find it pretty fun to play around with.

I put it on the App Store if you want to try it out yourself.

EDIT: Now available on the Play Store as well!

It is a flask for the volumetric determination of fat in dairy products. A Gerber Tube, if my memory serves me right. My first job, 50 years ago, was in a dairy lab, but my memory could be leading me astray.

Edit: no, these are Gerber tubes. I still think that is volumetric fat, though.

Sorry! Making an Android app is on my roadmap, but it's going to take some time... it's a completely different language and developer tool environment. It's like finishing a 30 step natural product total synthesis, then making an analog by going back to step one and redoing the whole thing.

I think this app on the Google Play does something similar, but it's a dollar.

I got mine for free at a careers fair, so I'm not entirely sure where they got theirs from!

At a quick glance, you can find a different model on Amazon here: https://www.amazon.co.uk/Periodic-Table-of-Elements-Pen/dp/B016E1W9K2/ref=sr_1_1?ie=UTF8&qid=1490977736&sr=8-1&keywords=periodic+table+pen

But that's rather expensive -- you may find it cheaper elsewhere.

Vaseline is basically the same thing and less runny. A tube of proper silicone vacuum grease should realistically last forever, though and is like $20. https://www.amazon.com/Dow-Corning-Vacuum-Lubricant-5-3oz/dp/B001UHMNW0

Succinic acid is being sold in tablet form pretty much everywhere. I doubt it does much good as a drug, but it's certainly harmless. Also known as food additive E363.

A similar book is The Poison Squad by Deborah Blum.

Green copper sulfate was added to peas to make them look greener. Borax was added to meat to make it look fresher.

Specifically for milk, they used marigolds, saffron or annatto (that's Kraft yellow). If you mix some marigold powder into milk it looks yellower. You can then skim the valuable milk fat and still sell the milk at a high price (because it looks yellow and creamy.)

Fun read.

Knowing what I know now, I would investigate more carefully the exact PIs who were working in areas I would like to work in. I would make sure they had plenty of funding and that they already had tenure. I would then meet with them face to face to let my instincts tell me if they were assholes. I would negotiate with them a reasonable length of time in which to complete my degree.

Of course, knowing then what I know now I would have bought some particular stocks and never had to work again anyway.

The upshot is that those too many years in a crappy graduate school were not wasted. I got my degree and enough stories to fill a novel:
https://www.scribd.com/doc/36568510/A-Novel-and-Efficient-Synthesis-of-Cadaverine

This is getting back to the very start of chemical science. The discovery of oxygen by Priestly and the first quantitative experiments on combustion done by Lavoisier.

Then In 1805, Joseph Louis Gay-Lussac and Alexander von Humboldt showed that water is formed of two volumes of hydrogen and one volume of oxygen.

Then Lewis suggested a theory on how electrons form bonds in molecules. Then Molecular Orbital theory gave a better description.

Further there is a list of organic reactions that can be used to qualitatively determine what elements and functional groups are in organic compounds.

There is a chapter in Vogel Practical Organic Chemistry (THE Organic Chem Bible) called Investigation and Characterization of Organic compounds.

https://archive.org/stream/TextbookOfPracticalOrganicChemistry5thEd/VogelPracticalOrganicChemistry5thEditionnewfoundV#page/n13/mode/2up

If you want to know more read that. But basically if you don't have access to spectroscopy there is a flowchart of qualitative reactions and physical tests that you can do to determine characteristics, elemental content and functional groups.

But NMR, X-ray diffraction and mass spectroscopy are the only ways of characterizing the really big molecules.

This book is considered too dangerous for public consumption, so it's hard to find paper copies, and most libraries removed it from their shelves in the 1960s. Nevertheless, many of today's chemists (including me) learned a lot about handling chemicals from that book.

http://www.geekityourself.com/files/The-Golden-Book-Of-Chemistry-Experiments.pdf

A more up-to-date (and presumably safer) text is this one:

https://www.amazon.com/Illustrated-Guide-Home-Chemistry-Experiments/dp/0596514921/ref=sr_1_20?ie=UTF8&qid=1521740904&sr=8-20&keywords=chemical+experiments

Hey! I'm a chemistry grad student, and my group does this demo as part of a science outreach program we run. Here's how we do it:

We use orange highlighter for the right solution, which works quite well. You just dissolve an orange highlighter cartridge in some water.

The center one is just store-bought tonic water, though you could try some other colorless fluorescent compounds like POPOP or anthracene (the tonic water is probably the best and easiest though).

The left one can be substituted with a green highlighter dissolved in water, but it doesn't produce that nice line when you shine the laser through. Fluorescein is a pretty common fluorescence standard, so it's quite possible that your lab would have some. If not, you can actually just buy it on Amazon. It dissolves in mildly basic aqueous conditions (~0.1 M NaOH is what I use)

We use a UV laser diode for the light source, something like this.

Hope that helps!

I have a dream, that one day molecules will not be judged by their labels from sketchy Amazon sellers, but by their actual structures

Also, the structure of the necklace is kind of weird, I think it's supposed to be caffeine but it might be missing a methyl group now that I look at it more closely. It actually looks more like this: https://en.wikipedia.org/wiki/Paraxanthine

If anyone else wants to report it, the link is https://amazon.com/dp/B07F7S62YD/

Hopefully we can get it renamed, or at least removed. (Although even this would be a drop in the bucket, since there are many other mislabled dopamine/serotonin/caffeine necklaces.)

“No yanning, either,” Angress said. “Play nice.”
“What’s a yanning?” Bryan asked.
“I guess the legend has finally died,” Angress said. “Wei Xin Lan was a Chinese kid. Red Chinese, from the old country. Left here maybe five years ago. He worked for Giard, who had a big group. Seven or eight, the majority of them real winners. They couldn’t get along. Stole each other’s shit. Yan was the worst. Maybe he was the original bastard, and he tainted the whole lot. He was so notorious his name became a verb. If you distilled a solvent one day and the bottle was empty the next day before you even got a chance to use it, you’d gotten yanned. They ended up carrying distillation heads and condensers around in their backpacks to keep an eye on them. Then Yan started to code his reagents so nobody could use them but him. He’d get a bottle of something from Aldrich, and he’d scrape off the label and replace it with one of his own, in code. Like he’d take that bottle of palladium on charcoal and relabel it 12A or something. Pretty soon the lab was full of bottles and jars with Yan labels. Never wrote down the key to the code, just kept it in his head. One morning he shows up and realizes he’s forgotten how to break his own cipher. It never came back to him, either. They had to throw out four barrels full of chemicals. Unknown chemicals, mind you, the most expensive kind. When Giard got the bill he started screaming like he’d dropped a gallon jug of chloroform on his toe....” She smiled. “Good times.”
“So what happened to Yan?” Russell asked.
“Graduated and went back to the big China. Took over his daddy’s fertilizer plants. Last anyone heard, he was just a regular comrade - with a couple hundred million in Swiss banks.”

https://www.scribd.com/doc/36568510/A-Novel-and-Efficient-Synthesis-of-Cadaverine

Yes, just like you said. Dissolve glucose and NaCl in hot water, in molar proportion 2:1 (around 15g of NaCl per 100g of glucose), then let it crystallize. It is quite soluble, so mass of water should be roughly the same as the mass of glucose.

Mine specimens were grown roughly in a month.

This paper also mentions analogous NaBr and NaI complexes.

http://www.khanacademy.org/

and I don't care what #'s your professor assigns. Do all the problems for a given chapter, unless its like completely irrelevant shit ( to the course ). Understanding electron movement is worth 10x more then memorizing mechanisms.

Practice drawing hexagons in all your other classes.

This book got me through my sr capstone and grad school.

https://www.amazon.com/Spectrometric-Identification-Organic-Compounds-Silverstein/dp/0471393622/ref=nodl_

Anybody else ever think of complex nmr as Sunday paper puzzles?

I have a BSc in biochemistry. Right out of undergrad I was hired to do research in an academic lab where I took some graduate courses. When the grant funding took a hit I went to work for a CNS Drug maker, where the job was just being a pair of hands, although compensated 40k+. After 6 months there I went to work for Novartis, a swiss big pharma company where I feel I was well nurtured and rewarded, although the direction of the research is a point of disappointment. While at Novartis I continued to take graduate courses, which allowed me to be exposed to new ideas but also new networks, one of which came to fruition with involvement in the Biotech startup scene in San Francisco. Having a BSc in a life-science has given me huge leverage to explore many options, but it is important not to be satisfied with what you are initially given. Nor is the right answer always to return to school, putting off real-world experience and closing the doors of opportunity.

Hear what young leaders in the field say: http://techcrunch.com/2010/07/24/speaking-of-frogs-william-andregg/

And listen to what "rock-star" veterans of other tech fields are saying: http://techcrunch.com/2011/04/10/peter-thiel-were-in-a-bubble-and-its-not-the-internet-its-higher-education/

K hope all this gives you a realistic picture of all the choices you have and finding the right path for your personality.

Well well, I create chemistry designs as a freelancer, next to studying ChemE :D If you like the design, it would mean a lot to me if you check it out on Amazon (US only, sadly).

First search result on Amazon is 40 g for $16.

The deposit was about 20 miles north of Spokane, WA in the abandoned Daybreak Mine. I've been trying to identify the ore, but can't quite make a good match. The best I can guess is samarskite. The rocks were mainly beige with areas of orange. The parts that I believe were uranium were black spots on the rocks. The best piece I got was around 400 cpm, and it was a tiny, triangular rock with the most radioactive side being a dark black, almost like pencil lead.

I haven't specifically seen these videos but Khan Academy is usually a great place to start learning something. The videos are free and usually easy to understand.

http://www.khanacademy.org/

Useful for a variety of sciences and it has quite a good series covering chemistry. I'm self taught with no post secondary experience and have managed to obtain at least an adequate understanding of the chemistry material.

This is the book that was used in my physical chemistry class. I enjoyed it quite a bit as it is written very well and the practice problems help quite a bit. The book is extremely thorough when going through all of the derivations of equations and give pretty good logical explanations while going through the problems as long as you understand how the algebra and calculus works. The biggest con with it however is that the figures which go along with some of the book can be quite difficult to understand the first time you are looking at them. The book can also be quite dry at times. Because of this, I had also picked up the Atkins book because I found it used for cheap on amazon. The Atkins book is a bit less dry and the figures are way more pleasant to look at, however it seems to be a little less in depth than the McQuarrie book.

No matter which book you choose to go with just be aware that the class can be extremely difficult for people and the most important thing is to make sure you are putting a lot of time into the class. It might be worthwhile to find a decent calculus review and to go through it before taking the class if you feel at all lacking in that department. If you do this you will succeed and possibly even really enjoy the class. I was incredibly nervous going in to the class but it turned out to be one of my favorite classes I took my entire undergrad.

Khan Academy has a bunch of really good videos which will build a solid foundation of chemical knowledge. From there they offer organic chemistry videos as well.There is also MIT open courseware for more advanced courses. The sidebar has textbook recommendations for general chemistry and other topics as well as links to chemical forums where a bunch of knowledgeable people would be more that happy to direct you further and answer more specific questions.

Good luck, there is wide variety of topics in chemistry and it will probably take you a while to narrow down your interests. Keep exploring different avenues and attend chemistry research seminars given at your school if possible/available.

Not for synthesis, but for analysis- yes. I have GC/FID, GC/NPD, GC/TCD, and now GC/MS. Also polarimetry, osmometry, microscopy (all sorts except SEM, although I know one guy who had his own basement SEM), some other stuff I'm not thinking of right now.

American Science and Surplus has some stuff, but not much. Otherwise, I just buy what I need on eBay, although sometimes I need to shop for a while until the price is right.

(I don't have first hand experience with the R language, or experience with data science)

This is what I've found before when looking at an article about a chemist using R It's not chemistry specific but it's got good points about data manipulation and the basics of R.

To my knowledge, R is very good for statistics and manipulating data, et c. It certainly seems like there would be some good applications for R in chemistry, especially if you work with a lot of data/statistics.

Python seems to be a good language to learn. SciPy, NumPy, SymPY, et c.

If you decide to sell a drug, herb, or chemical for human consumption you have to undergo FDA inspection and certification.

If you decide you want to sell that same thing without inspections, you can label your herb, drug, or chemical as a "dietary supplement" and exempt yourself from these regulations.

This isn't a thing about idiots wanting their hands held, its an issue of legitimate danger. Dangerous supplements on the shelves is an issue happening now. There's cases of supplements containing none of the advertised herb and being filled with other random plant material. It's crazy.

Basically the dietary supplements industry today is like the drug industry a hundred years ago.

American Science and Surplus (linky) has a lot of surplus/lightly used/brand new & cheap lab equipment. Glassware, bottles, stoppers, balances, etc. They don't have a lot of the fancier stuff but for general supplies they're great.

I never understand what the hell they are teaching people in University nowadays...15 years on from its inception and still most scientists have not heard of ImageJ and all its plugins...they waste hard earned grant money on stupid software thats worthless for career advancement...

anyways, I know its snarky, but here is the answer to all your problems. Learn to use it and take it with you wherever you go...

http://rsbweb.nih.gov/ij/

or if you want a bunch of already installed (image rendering-based) plugins you can try Fiji: http://pacific.mpi-cbg.de/wiki/index.php/Fiji

$200 for 50g of copper sulfate... am I reading that correctly? That must be some pretty damn research grade pure copper sulfate for them to charge that much. For just crystal growing, as OP seemed to want to use it for, you can easily get away with using something like this off amazon, which is 16 bucks for 2 pounds of the stuff.

I'm not so sure about their methods. I was curious, so I went to Boeing's website and searched for "chemistry" and "chemist" on their jobs page. Turned up nothing. It looks like they simply did a Linkedin search (results here).

As you can tell, none of the search results actually specifically state that they are hiring for a chemistry position. Nearly every engineering job, including Software Engineers and Wiring Installation Engineers, has the phrase "Bachelor, Master or Doctorate of Science degree from an accredited course of study, in engineering, computer science, mathematics, physics or chemistry" in the description.

That is handled by CIP rule 5 that allows for pseudo asymmetry. The center would be assigned a lower case r or s.

See slide 9 for an example - https://www.slideshare.net/NextMoveSoftware/cinf-17-comparing-cahningoldprelog-rule-implementations-the-need-for-an-open-cip

ChemDoodle desktop is commercial software. The ChemDoodle Web Components library is free and open source under the GPL v3 license. We use a lot of our revenue to develop solutions for scientists and give back to the community in many ways. We are dedicated to supporting the chemistry community that supports us!

I never had much luck with scifinder and always resorted to using Google Scholar: http://scholar.google.com/schhp?hl=en&tab=ws

The nice thing I found about Google Scholar was that while I was on the campus network, it would tell me whether or not I had access to that article through our library. I don't know if every school's network is capable of this, but if it does it is very very handy.

Read through the article, and about to read through the comments.

I just have to say: as someone with ADHD who takes a 'hefty' dose of concerta / Methylphenidate daily in order to function at the most basic level... Fuck you.

I'm currently in my final year of my BA and I'm a 3.8 student. I have straight A's in inorganic chem, an A in Orgo 1, and I'm currently in Orgo 2. I've completed Cal 1, 2, and am currently in 3. And you know why i made it this far? because my parents and professors taught me to work hard for the things i wanted. I fucking LOVE science, and it changes (read improves) my outlook on life on a daily basis. I refuse to let my ADHD stand in my way, and thus i study for hours on end, spending most weekends at my desk reading, doing practice problems, watching Khan Academy video's to help me review and generally just work my ass off to make something of myself.

TL;DR I will not allow somebody with half the determination and twice the genetics to be better than me.

High school is where students SHOULD be made to scratch the surface of just about every subject across the board. Its the first taste (lol not even close) to the real world of having to complete tasks that you may not like or be good at, yet they must be completed nonetheless. College is where you get to make your choices.

Chemistry? According to him, "All science is either physics or stamp collecting."

^(needless to say I disagree... but as the others have suggested you had probably best figure that out for yourself)

I always recommend Khan Academy to beginners. It may be simple but it will help you get the very basics down pat.

Here's the link to the chemistry playlist on Youtube:

http://www.youtube.com/playlist?list=PL166048DD75B05C0D&feature=plcp

Enjoy learning, and good luck!

Well, intro courses can always be supplemented with online material. I know a lot of friends who made it through using Khan Academy. My strategy has always been flashcards; a bit old-fashioned, but it works for me. Also, in the name of all that is holy, do NOT be afraid to go to your professor/TA and ask for help. They can't help you if you don't ask them to. And as long as you aren't planning to major in Chemistry, a pair of C's in GenChem I & II can be overcome.

If anyone's curious, the earliest records of the word "organic" are from the 1510s where it referred to the musical instrument ("organical" was for living things). For a century from the 1770s to the 1870s, it was used to refer to "from organized living beings"; only in the 1870s do we find the first reference to "organic chemistry."

In my brain I kind of just pretend I'm a scanner. I pick one type of atom on the left, then look at the right and change something to make sure it matches. Then, if I changed anything by making that previous change, I go back to the left side of the reaction and fix that. Then I just keep going back and forth until everything is worked out.

http://www.khanacademy.org/about probably has some videos.

If you have any problems I can show you how I would go about solving them.

1. Have a torrent client, if not, download deluge

2. Download the torrent for this book here

3. Read book

Are you fucking kidding me! Stay the fuck away from solutions of gold nanoparrticles. Colloidal gold is often used interchangeably but in the nanoparticle community usually refers to particles bigger than the one the guy showed, which are usually less toxic, as the body can easily clear things of that size scale. The verdict is still out on how toxic these things are, but one thing for sure is that they are toxic, why the hell would you believe the sites that push these things, a simple google scholar search will show you that its probably bad!

Khan Academy

This might cover the video lectures portion. The best help you can find is from your teacher or professor, if they are worth their salt they will be able to figure out exactly why you don't understand the material and help you in an appropriate manner. Good luck!

More likely the 3rd edition that was made in 1970.

It is a better book than most on the market and only ~$15. Better in terms of clearly and concisely written. Downsides are a smaller problem set than modern textbooks, no online companion, and some out of date constants (since the 1970s we've redefined the basis of a few constants).

https://www.amazon.com/General-Chemistry-Dover-Books/dp/0486656225/ref=tmm_pap_title_0?_encoding=UTF8&qid=&sr=

Nah. Stuff is pretty cheap. You can find it on amazon. It's great for cleaning metal, anything with mineral deposits, and stuff like rust stains. Basically anything where the oxalate can chelate the offending metal ions will get cleaned up nicely.

Edit: here's the first result I found

https://www.amazon.com/Bar-Keepers-Friend-Powdered-12-Ounces/dp/B00JPO0KJ8/ref=sr_1_7?crid=24MQWXBUPYZ5A&dchild=1&keywords=barkeeper%27s+friend&qid=1595289343&sprefix=barkeepe%2Caps%2C384&sr=8-7

http://www.khanacademy.org/science/chemistry

http://chemwiki.ucdavis.edu/

Also, if you know your question well enough, a simple search of the question in google will usually net you a useful result.

http://hackaday.com/2015/08/03/dissolve-steel-drill-bits-in-alum-from-the-grocery/

Boom. I also tested this technique on a variety of different metals for reference. If someone cares to sift through my post history and find it, it's there.

Also, when machining aluminum, tap/drill fluid is your friend. Seriously, I went through a whole set of drill bits before discovering tap fluid. Little dab'll do ya.

This may be relevant to your interests. Let me know if you're stuck behind the paywall.

this

tldr - permanganate and sulphuric acid stirred for a few hours turns TiAlN into a black crust which you can scrub off.

Save yourself $200, you can get the 5th edition of Skoog on AbeBooks for under $10 delivered.

Maybe you could. Gold has distinct color differentiation that is dependent upon sizes.

https://www.semanticscholar.org/paper/The-golden-age%3A-gold-nanoparticles-for-biomedicine.-Dreaden-AlKilany/381710910b9e4df3d97287a75482d6b2a9d731be/figure/3

LaTeX is the way to go. MS Word is extremely limiting and annoying. LaTeX is used by professionals, it makes formatting, entering equations, and citations pretty easy. And the best part, the program is free to use. Here is the website for more info

http://www.latex-project.org/

And different TeX editors compared

http://en.wikipedia.org/wiki/Comparison_of_TeX_editors

I personally use TeXShop, but I have a Mac.

As to which journal is right, ask your professor.

It's free. I'd use an online editor (Like sharelatex.) since it takes care of some of the more intimidating compiler issues for you and lets you see what your output looks like before compiling.

For a less steep learning curve, LyX is LaTeX with a graphical user interface (more or less). I prefer raw LaTeX myself, but then I like the power of command line interfaces.

And LaTeX is not just useful for math (not that /u/wygibmer said that). It makes it really easy to make professionally looking documents.

Zumdahl is the standard high school/college general chemistry textbook. I’d also watch crash course videos too. Khan academy or others probably have videos. Lots of resources out there. I’d recommend reading up first before trying experiments, that way you are reinforcing the chemistry theory with the experiments – rather than doing experiments solely because it’s cool and fun (doing it because it’s fun should still be the main reason though 😎)

<strong>Wolfram|Alpha</strong> has a much simpler and easier to use interface than the suppliers or CRC. I'd start there for common chemicals.

I also made <strong>a widget which simplifies the output</strong> even further

A minor picky-point; liquid ammonia temperature is -33 deg C.

The reason that HF dissolves silca is the very high strength of the Si-F bond; the same reason flouride-based reagents are so suitable for cleavage of silicon protecting groups. That's also why HF has to be handled and stored using teflon apparatus.

What you are describing is known as third hand smoke and it may be detrimental to one's health but that is an area of open research.

&#x200B;

https://www.mayoclinic.org/healthy-lifestyle/adult-health/expert-answers/third-hand-smoke/faq-20057791

Link: https://www.semanticscholar.org/paper/A-Simple-and-Convenient-Synthesis-of-From-Hai-Hakkenshit/06b66e418bbd93184228fbc5c0395eb1bf15a5d3

I'm not sure how "serious" you could call this with totally real author names such as "I. B. Hakkenshit" and "O. Hai" lmao. The reaction seems to check out, but it wasn't actually published in any real journal

To add on to /u/ezaroo1 's explanation, I find that some compelling evidence comes from computational work. The gist of it is that, they can calculate the wavefunctions involved in a hypervalent compound, and they can break it down to the contribution from the various atomic wavefunctions. It turns out that the contribution of, say, the 3d orbital in a hypervalent phosphorus or sulfur compound is way less than hybridization would predict. For example, in SF6, the contribution of the sulfur d orbitals is about 2% each, rather than the ~17% you might expect from a d2sp3 hybridization model.

https://www.researchgate.net/publication/225070948_On_the_Role_of_d-Orbital_Hybridization_in_the_Chemistry_Curriculum

http://m.sf.oxfordjournals.org/content/88/2/865.short > when women moved into occupations in large numbers, those jobs began paying less even after controlling for education, work experience, skills, race and geography

Examples like

field of recreation — working in parks or leading camps — which went from predominantly male to female from 1950 to 2000. Median hourly wages in this field declined 57 percentage point

when women in large numbers became designers (wages fell 34 percentage points), housekeepers (wages fell 21 percentage points) and biologists (wages fell 18 percentage points). The reverse was true when a job attracted more men. Computer programming, for instance, used to be a relatively menial role done by women. But when male programmers began to outnumber female ones, the job began paying more and gained prestige.

https://www.researchgate.net/publication/37710729_Making_Technology_Masculine_Men_Women_and_Modern_Machines_in_America_1870-1945

Scottish PhD chemist here. Talk to your current chemistry teacher about it; I bet they'll be quite receptive to helping you if you're serious. There's also Khan Academy; Maybe you could also ask your parents to get you some extra private tuition, though I'd imagine that could get expensive.

Khan Academy baby. Just look up any of the concepts from the comments here and watch the videos. Plus it's also an invaluable tool to have during the class.

Bryan shrugged. “Don’t bring me down. I’m going to do novel syntheses. Not like them other putzes who do obvious shit. And I’m going to title my papers like: A Novel and Efficient Synthesis of Blank.”
“Bullshit. You hate that pretentious crap.”
“I am joining the club. My chemistry will be novel, efficient, and – dare I say – elegant.”
This seemed improbable to Russell. There were many journals in the library that had been defaced by Bryan’s pen: glossy black ink heavily applied over any appearance of the word ‘elegant’ in a scientific paper. Marilyn Monroe’s ass was elegant, he used to rant, not some cocksucking solution chemistry.
“And after I die, my final paper will be published posthumously: A Novel and Efficient Synthesis of Cadaverine.”

https://www.scribd.com/doc/36568510/A-Novel-and-Efficient-Synthesis-of-Cadaverine

It might not be of a lot of help, but I did an internship for half a year developing scaffold heterocycles for (amongst other things) agrochemicals like herbicides.

Definitely recommend a lot of metal organic chemistry as it's heavily involved in the synthesis of heterocycles. Ring closing methathesis (e.g. with a Grubbs catalyst), something more old fashioned like Pauson-Khand, palladium coupling reactions like Heck, Sonogashira and something more fancy like this are all helpful. If you didn't look into azido-alkyne Huisgen cycloaddition before, do so too as it's incredibly helpful for organic chemistry in general, including the knowledge of the mechanism.

As for books, I recommend the one from Crabtree on metal organic catalysis (link).

Hi /r/chemistry!

Just wanted to see what you think of my latest creation, the Periodic Calendar!

Modeled on the periodic table of elements, the Periodic Calendar reveals the full landscape of possible days by categorizing years based on their first day of the week. Stocked standard with over eight centuries, it’s a perpetual calendar capable of exploring past, present and future dates as never before.

You can get more of the story at the Indiegogo campaign... http://www.indiegogo.com/periodiccalendar/x/1790626

Or on the site: http://periodiccalendar.com

Thanks!

-Joey

Yeah I didn't use the recipe they had that came with the cutters. I always use this recipe for sugar cookies: http://allrecipes.com/Recipe/Michelles-Soft-Sugar-Cookies/Detail.aspx

This is the best recipe I've found for sugar cookies in general, they come out super soft and is pretty easy to work with. The only downside is letting it sit in the fridge overnight before using it.

If you are in the UK you might ask your library for a inter library loan from oxford or cambridge they seem to have it. http://www.worldcat.org/title/journal-of-the-association-of-official-analytical-chemists/oclc/1034419

Here is the link from Oxfords library.

khan academy has a really good Chemistry section. It's a series of 15 or so minute lectures teaching everything from Chem 1 up through Physical Chemistry.

That being said, maybe it would be best to place into Chem 1. There's really no substitute for an actual class with homework problems/exams.

<A href="http://www.ask.com/wiki/Hexaphenylbenzene"&gt;Here&lt;/A&gt;,sorry it is a lame example, but making highly substitute benzene rings are quite simple via a diels alder reaction with tetraphenylcyclopentadienone and some alkyne. Klaus Muellen has used this reaction to no end to make HUGE molecules.

Taken from the sidebar:

Thermo: https://www.amazon.com/gp/offer-listing/1429218126/ref=as_li_tf_til?tag=chemit-20&amp;camp=0&amp;creative=0&amp;linkCode=am1&amp;creativeASIN=1429218126&amp;adid=19B0RNH135MTN1729FYV&

Quantum: http://www.amazon.com/dp/0199541426/ref=as_li_tf_til?tag=chemit-20&amp;camp=0&amp;creative=0&amp;linkCode=as1&amp;creativeASIN=0199541426&amp;adid=0BJWD0H0EBA0HV1WSYZ6

ChemSketch and Accelerys are the two I've used. Not quite as sleek as ChemDraw, but they work just fine.

Our group does lipid quantification with some molybdenum reagent. I don't work with vesicles so I can't tell you the specifics, but a google search suggests this as the lead: paper

If it's high temperature you want, nothing beats flash vacuum pyrolysis. Not quite sure how industrially useful something that requires vacuum is, but it's awesome. http://www.sciencedirect.com/science?_ob=ArticleURL&amp;_udi=B6THS-3SHSCRS-F&amp;_user=10&amp;_coverDate=03%2F26%2F1998&amp;_rdoc=1&amp;_fmt=high&amp;_orig=search&amp;_origin=search&amp;_sort=d&amp;_docanchor=&amp;view=c&amp;_searchStrId=162828973...

In our lab we use python for instrument control and m-script/matlab for data analysis. I always recommend edx for people wanting to learn programming. They have survey classes of languages and classes tailored to specific languages.

http://www.edx.org

For instance, check out the curious way he draws an E2 mechanism represented by the motion of single electrons. An interesting interpretation anyway.

You're probably using the style that only specifies authors and dates.

Just hover over all the ACS styles to see a preview and pick the one you want. I use the JACS style, which makes it easier because there's only one option.

We use PHP/MySQL: Setup a Apache-server with XAMPP, this is done in five minutes. Learn yourself the SQL language and PHP and use the PDO driver and prepared statements. See www.w3schools.com for references.

I don't like the standard theme for PowerPoint because it uses Calibri and I don't like the colors. Also, using the standard layout and color theme may come across as lazy? Like, you spent all this time preparing and you just used the normal template? That may not be a real issue,but it's something I worry about. Also, I just don't like the way the standard layout looks.

A year ago or so, I spent a day once and changed it to how I wanted it to look: Times New Roman headings on a green rounded rectangle, Arial slide font, and the slide number in a small green box on the bottom right. I wanted green because that is my favorite color. Now I know when I go to start prepping slides that they will always look the same and I won't need to spend an hour playing with colors and fonts.

. There's a couple websites, like this one that let you browse color palettes so you can make your slides look pretty.

Like somebody else here said, LaTeX is the way to go, though it does have a bit of a steep learning curve in the beginning. This link has nifty examples of what you type and what the output is.

You can find a common windows editor here

Maybe see if your lab director would be okay with you wearing tinted goggles? Something like these, I can't vouch for them but it seems like something similar could help.

I don't know what op would recommend, but I can say for sure that a great book for anyone looking to learn about refining is Refining Precious Metal Wastes by C.M. Hoke. I don't know why that link shows it as so expensive btw. I think that you could probably find it for cheaper.

VSEPR hasn't changed in the last 10 years. Don't spend $230 on a text, when you can buy a slightly older text for far less. The general chemistry text recommended by the sub is available on amazon for as little as $20.

Suggest: [Working_piece] -> [LARGE Cold_trap DRY ICE] -> [Small Cold_trap LN2] ->[Scroll_pump]

The dry ice cooled trap can be made from a 1 L round bottom and one of these adapters: https://www.amazon.com/Joint-Glass-Connection-Adapter-Glassware/dp/B0759YGNVV. The advantage is that the alcohol will not freeze so you don't need to worry about it plugging. The LN2 trap will prevent small amounts of alcohol from contaminating your pump. This is a better set-up than using LN2 to cool such a large amount of solvent.

In undergrad I remember using ChemDraw. It was free then, but I'm not sure about that now. I know there was an app for drawing on tablets that worked pretty well.

Here's also a link for a highly rated app in the play store:

https://play.google.com/store/apps/details?id=com.kingagroot.kingdraw

Tekpower TP3005E DC Adjustable Switching Power Supply 30V 5A Digital Display https://www.amazon.com/dp/B00PWNQMYI/ref=cm_sw_r_cp_api_oLyKBbFC8PBA3

This may work for what your are trying to do. It’s only up to 30 V. If you want higher, you will need to pay more. The power supplies I work with in my lab can go up to 3000 V, and I’m sure those cost a grand or two.

Get a regular book there are PDF ebooks online quite a few are free.

or.

amazon.com -find a top selling general chemistry book -look for the previous version. -buy used version of old book Books decrease in value from being worth $280 to $28 when universities switch books even though they have the same material often just adding new graphics and different examples.

As for practical application sometimes books have every day applications in them but not as much early on. I have an aquarium so I breezed through the pH stuff but I had to make it interesting and relate things on your own. ~Begin rant~ Chemistry is everything around us we drink it, we are clothed with it, it transports us, and cures our illnesses. Chemistry is the cure for a curious mind. Unfortunately, It starts off kind of like math class and you're like when the fuck am I ever going to use this and then it gets progressively more interesting as they slowly work in application and if you stick with it a couple years later you will find that you're kicking yourself for forgetting a seemingly minor detail at the time in general chemistry and it plagues you until you go back and relearn it so don't throw your books away either. ~end rant~

YouTube helps keep it interesting in the beginning but there are only so many time you can see something exothermic before it gets boring and they don't let you touch those chemicals for years anyway.

Also check out Khan Academy http://www.khanacademy.org/science/chemistry

I tutor general chemistry, if you want to prep yourself go to http://www.khanacademy.org/science/chemistry I trust this'll be a good primer, may even make the class too easy.

You might be surprised at first to find that the intro to chemistry involves a lot of conversions (A grams->A mol->B mol->B grams,...)

I don't think you can determine that on a regular periodic table either. Noble gases are an exception to the general trend of electronegativity: http://wiki.answers.com/Q/Why_are_no_electronegativity_ratings_given_for_noble_gases & http://en.wikipedia.org/wiki/Electronegativity

To directly quote the document...

>Safrole (160g)(sassafras oil, yellow camphor oil) (Natural/Essential Oil distributor)

So, yellow camphor oil.

Here is the redacted version, if you're interested in looking it over.

Details and measurements, critical to the synthe, have been removed, ensuring absolute legality. On the other hand...

This is for theoretical argument only. IF someone chooses to follow this synthesis, note that the product has been 'Scheduled 1' by the United States Government, and offenders can be prosecuted. In no way do I condone this activity

I'm assuming you want to quantify the caffeine content of the beans. This paper (message me if you don't have access to this) seems to suggest that this task would be complicated by nearby absorbance peaks from impurities. That might be something you should consider in your project for the most rigorous results.

I haven't taken any analytical chemistry, but a lab assignment I've had involved the transesterification of vegetable oil, and then using GC-MS, NMR, and IR to analyze the different fatty acid esters produced from that particular oil. I only had to do it on one particular type of oil, but you could compare several.

For most stable products you would be probably fine by just vacuum drying it. I would say that the main advantage for freeze drying is maintaining the structure, for example for nanostructured materials (See this image). Also you can compare dehydrated with lyophilisated food and see that the second one is better at keeping the original shape.

Very good for nomenclature. A little dicey for reactions. He's read the textbook, but he doesn't teach from the perspective of someone who really understands what's going on. <em>Fluoride as a good leaving group</em>?

I found Quantitative Chemical Analysis to be extremely helpful when I was an undergrad.

Ooh, can I get cheap, open source deuterium for my UV lamps now?

If you want a really cheap spectrometer, just get a Spec 20 off ebay and rig up a computer interface.

Buffer calculator

You will need several different calculations to do this on paper.

First is the Henderson-Hasselbach equation to determine the final pH based on concentration of reagents. Then you will also want to do a mol/volume/mass calculation to figure out how much of each chemical is added.

/r/chemhelp is really the place for questions like this.

This might help, and if you're still having trouble then it'll give you something more specific to ask about (since "how do I balance equations" is a totally valid question, but is also really general).

I think "Did you try the actual citation" means... Instead of using the title for searching, use the citation info (journal, vol, page). I agree it is good to try if TI fails; you have an old article in a foreign lang.

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Citation search: a search for articles that cite your given article. GS provides this -- but since GS failed to find the article, that doesn't help. Ask your chem librarian to show you how to use Web of Science to do a citation search. It is something worth learning.

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Ah, GS is not good with umlauts. Try GS again, but with the title fragment Ueber eine neue Bromirungsmethode organischer Note that they (Wiley) give the title with the first umlaut converted to an e, and the second one shown as an umlaut. Dumb. This will find it. It won't give you the translation, but it does show citations.

You should get to: http://scholar.google.com/scholar?hl=en&amp;q=allintitle%3A+%22Ueber+eine+neue+Bromirungsmethode+organischer%22&amp;btnG=Search&amp;as_sdt=0%2C5&amp;as_ylo=&amp;as_vis=0

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I gather you have a digital copy of the article, in German. Try running it thru Google translate. May not be perfect, but can be useful. Then look around for someone who reads German to help you -- even if they don't know chem. (Are you at a big univ? They teach German? I bet they would be happy to help.) Anyone in your dept speak some German? Ask!

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I appreciate the importance of aiming you to primary lit, not textbooks. But sometimes primary is not available. Are you allowed to use a later article that discusses the mechanism?

If there is a topic you struggle with, go to this website. This guy does videos about chemistry, physics, biology, biochemistry, maths etc. I wouldn't recommend learning the entire course this way, with no lectures, but it is still really useful to consolidate your knowledge.

Try watching this: http://www.khanacademy.org/science/chemistry/v/redox-reactions

Khanacademy usually has pretty good and simple explanations for things. Not sure how else redox can be explained other than how your teacher probably explained it. It's as simple as keeping track of your electrons. Oxidizing agent causes another reactant to be oxidized, reducing agent causes another reactant to be reduced. Oxidization is a loss of electrons, reduction is a gain in electrons (i.e. a loss in charge). If a specific element in the reaction does not gain or lose a charge, it's neither reduced or oxidized.

Well, this is a bit of a crazy request. Thanks to the Internet, though, you might have a chance.

1: The Khan Academy has excellent chemistry videos and resources. No practice problems, I'm afraid, but Sal is an excellent teacher and his videos are great.

2: Wikipedia. That's where you go when you run into something you don't understand.

3: Google.

Hope you find what you need!