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I have this one and really like it.
It's a bit pricey on Amazon. I believe mine was $25 at my university. Maybe look around for different prices.
I used this book when I took the course, and got me through it without problems. I never read another EC book tho, but I liked this one.
https://www.amazon.com/Electrochemical-Methods-Fundamentals-Allen-Bard/dp/0471043729
As a free alternative to origin lab, I recommend https://www.qtiplot.com/
But if you're going to do these plots often, I recommend investing some time to learn a programming language, either to script on origin/qtiplot, or plot separately. Something like python/R/octave/matlab.
It's likely the you're inhaling partially combusted hydrocarbons. In high enough quantities, or with continual exposure, you could be putting yourself at risk, as many of the products of partial combustion can be carcinogenic. There is also the possibility of impacting respiratory ability.
I can't give you an opinion on whether or not something will happen because of this, but in terms of harm reduction, I would suggest getting a chemical respirator for your work. Keep the area well ventilated, as you do, and defer to a knife when possible.
The textbook you copied this mechanism from states this as a possible alternative to the mechanism I proposed (explained two pages before). However, a) the book uses a hypothetical tone ("perhaps (...) mechanism X (...) comes into play") and b) it states that this alternative is valid in the absence of an alcohol (also stating that traces of water/alcohol may catalyse the first version).
While I don't want to exclude the methylating variant as a possibility, I have the personal experience that acetalisations/esterifications with orthoesters go much faster in the presence of the corresponding alcohol, which would support the transfer of methoxy groups instead of methyl groups. Also, if the orthoester would be a methylating agent, it should also be able to methylate the methanol to form dimethyl ether. This would exclude the use of an alcohol as a solvent, since it would use up all the orthoester. As you can see, I am highly sceptical about this.
I did a quick mechanism drawing for you. Sorry for any inaccuracies and really poor quality pic.
http://tinypic.com/r/11si4d1/8
Two hydride shifts occur to form the most stable tertiary carbocation.
The double bond placement for #3 is also the most stable - even the very weakly electronegative methyl groups can have a stabilizing effect on the electron-dense double bond area.
There is no mistake on my part this time - that I am certain. I also found an article dealing with actual cis and trans acetylene.
I'm actually building a website that will be like duolingo but for teaching undergraduate science. I'm actually starting with general chemistry and hope to have a beta out in the next few weeks to get feedback: https://www.pocketscholar.com . It can't quite help you yet but we are really close! :D
If you're in university, most will have a license for Chemdraw somewhere on their software/chemistry page. Check there first.
I haven't personally used anything except Chemdraw, but I've heard good things about Chemsketch, which has a free version for personal use.
Have a look
https://socratic.org/questions/how-is-nuclear-stability-related-to-the-neutron-proton-ratio
The explanation there is not so good, but the graph is. (The explanation seeks a generality; the point is that the proper ratio varies, in a systematic way.)
Or google-images on
neutrons vs protons
and explore as you wish.
penguin's explanation is good. Don't try too hard to understand nuclear stability. It's based on the strong force, which is weird!
But it is plausible that more P means more charge repulsion, which means you need more N for stability.
Above some P value, there are no stable nuclei at all. The heaviest stable nucleus is one of Pb.
Any acid-base reaction like this will be a protonation / deprotonation reaction. The Kb is proportional to a ratio of compounds: the protonated acid, the deprotonated acid and OH- ions in solution.
Check out the following... http://www.geo.utexas.edu/courses/376m/LectureNotes/acidbase.pdf https://socratic.org/organic-chemistry-1/acids-and-bases-1/ph-pka-ka-pkb-kb
You could use a phone app that tells you the color of whatever your camera is pointing at such as this one.
On a side note the claims/advice in the product photos are hilariously atrocious.
You'll end up with water and a solution of magnesium ions and phosphate ions. Whether the phosphate has any hydrogen left depends on how much hydroxide you put in. If you want magnesium phosphate, Mg3(PO4)2, you'll need to do the math to get the molar ratios right.
It's just an acid-base reaction, it will be moderately exothermic, but assuming you don't have really concentrated acid you should be all right. If you're worried wear gloves and safety goggles and mix it slowly.
Edit- I found a bottle of food-grade phosphoric acid on amazon, it says 85% in water. That's concentrated enough to be dangerous, I hope you have proper protective equipment and know what you're doing. :)
Also found a bottle of magnesium oxide powder on Amazon which would work as well as hydroxide. Again though, it'll be an exothermic reaction and there may be spattering. You might find a cheaper source of MgO or Mg(OH)2 elsewhere, but that was the cheapest food-grade I found with a cursory search.
Absolutely, if you're talking about volumes in milliliters, or even a few liters, a simple vacuum filtration setup consisting of a vacuum pump (a simple plastic pump such as this one, which screws onto a faucet, might be sufficient; they can pull a pretty strong vacuum at very low cost and without any moving parts), a rubber hose, a vacuum flask, a rubber gasket, a buchner funnel and a paper filter (available in various grades, depending on your needs), can clarify anything you feed into it, up to a point. There are probably dozens of videos on YouTube that will walk you through the setup and process of performing a vacuum filtration, but it's not exactly rocket science anyway. :)
You can purchase all necessary equipment for well below 200$, total. If your starting liquid contains a lot of solid material, you might have to do a couple of passes, with progressively finer paper filters, before you are able to achieve the clarity you want. If you search for a buchner funnel on Amazon, it'll probably recommend appropriately sized paper filters to you. I wouldn't expect to be able to achieve perfect clarity, though; that's a tall order for physical filtration. Best you can do with a simple setup like this seems to be as low as 2 microns for particle size, so don't expect almond milk to come out clear after filtering. Clear*er*, but not clear as water.
This is the old standard one:
https://www.amazon.com/Prentice-Molecular-Model-Organic-Chemistry/dp/0205081363
And looks like "used" boxes are around.
But first check if prof recommends something or other, or if univ bookstore has something. Bookstore choice may or may not be good idea. (Sometimes they free lance, and what they have is not tops.) But prof's recommendation means more.
Unless prof has something special in mind, CHNO and halogens (various colors, one hole) is about all you need. And flexible things to make double/triple bonds.
Seeing basic geometrical features is more important than making fancy things, though you may have fun doing the latter.
Glucose is C6 H12 O6; sucrose is about twice that. I can't imagine you would need to make even something that big, except for fun.
Others may chime in on this. But prof's view is a factor.
I think I just bought what they were selling at the university bookstore, and unfortunately it doesn't have any type of labeling on it. I do have another model kit that I got from someone, I forget whom, labeled "HGS Molecular Structure Model Kit, WH Freeman and Company Distributor", but it's more of a deluxe version (more atoms than you probably need). I don't think they make it anymore, and the Amazon listing that I see for it is $77, which seems overkill for an O Chem course. There are lots of model kits you can get on Amazon for <$30, and any of them should do the job provided they're reasonably sturdy.
Arrow-Pushing in Organic Chemistry: An Easy Approach to Understanding Reaction Mechanisms 2nd Edition
https://www.amazon.com/Arrow-Pushing-Organic-Chemistry-Understanding-Mechanisms/dp/111899132X
You can get a preview here
http://libgen.rs/book/index.php?md5=8814E6C8CE946635F7DEB69D66DD0B7C
There are books of the form (and even title) introduction to general, organic, and biochemistry.
They are often used for chem-for-nursing-students and such.
What's nice is that the first two parts tend to cover what is needed for the biochem part. Such a book could be a good place to start. Of course, it is not complete, but what you want now is a broad view of the basics.
Here is one, which I have taught from; I think it is rather readable and good.
https://www.amazon.com/Introduction-General-Biochemistry-Frederick-Bettelheim/dp/1285869753
Note that hard cover, paper-back and e-books are all available.
Content changes very little; buying an older edition is fine.
(There are numerous such books. I just happen to have experience with this one.)
Ok, go make some ATP for yourself.
Short term that would probably be OK, but I don't know if they are rated to last 30 years. You can easily find 1 gallon glass jars they use for brewing beer or wine for less than $20
https://www.amazon.com/AGC-OC-EP2C-0K74-Gallon-glass-Jug/dp/B0064O8Z76
You might find something cheaper if you spend more than 5 seconds searching.
If that's true, is there any way to test for lid material, or to otherwise tell? like a solvent that affects PE but not PP or vice versa?
The bottles in question were either these or something similar from nalgene
https://www.amazon.com/Nalgene-Wide-Mouth-Round-Bottle/dp/B002SQGWF6
Thomas A. Albright (Author), Jeremy K. Burdett (Author), Myung-Hwan Whangbo (Author)
Orbital interactions in chemistry.
​
https://www.amazon.com/Orbital-Interactions-Chemistry-Thomas-Albright/dp/0471873934
Sure, thanks --
This heater says "Industrial grade 316 stainless steel heating coil is coated with high grade Teflon heating elements,the surface adopts advanced electroplating treatment to isolate the air from the stainless steel."
This one says "1. High grade Teflon coated heating elements. Highly anti-corrosive and durable heating elements coated with Teflon. With sauna stone, you could sprinkle water onto it to increase the temperature and humidity, give you a totally different feeling!"
Maybe it's a confused marketing department that mistranslated "non-stick" or "anti-corrosion" to "teflon"?
You’ll want a “float” style flowmeter, sometimes called a rotameter.
If you want approximate flow rate, you could buy a cheap one labeled for air/oxygen on Amazon but it’s not correctly calibrated for helium (and may not be the range you need). Or spend a little bit more on a He specific flowmeter
You can see hydroboration without peroxide. The addition of the peroxide makes the reaction a 'hydroboration oxidation'. The alkyl borane you generate from the hydroboration isn't massively stable but will keep for a short while and you can run spectroscopy on such compounds. The reaction is concerted (all bond making and breaking occurs in the same step), which is where the regioselectivity of the oxidation comes from. It isn't a special case for the syn addition property, the 'syn' notation denotes that addition of both groups occurs on the same face of the alkene. Other reagents like OsO4 (osmium tetroxide) will do it too! The H in the case of hydroboration will attack the most substituted carbon since hydrogen is actually more electronegative than Boron.
https://docs.google.com/drawings/d/1JUnH_7edVH1rRQsME4fKa0B6I3mElWycTMRkH0QxG7U/edit
Is this what you're referring to?
Zinc isn't exactly a precious metal.
If you're trying to stray from metals all together, this might be a good idea as well
There's also a much simpler way to reduce amines (I'm not sure if it works with nitroalkenes) that are double bonded with something of the likes of LiAlH4 , but i'm not sure if it applies to this. Maybe an alternate method would be to turn the nitroalkene into an amine, reduce it's double bond with lithium aluminum hydride then convert the functional group back if you're looking for an out of the way method that doesn't involve precious metals. But in practical terms, this is tedious and will effect your yield significantly i'd imagine.
I can find many papers online, especially with regards to use in SCR automotive systems.
No offense but its kind of rude to pander to guys to get help just because you're female.
Also, Chem 106 means nothing to us as course codes are not standardized. I assume its Gen chem though.
As danny said, look for free tutoring which is available at most school. Next start looking around for online videos, my favorite of which is Khan Academy. Even as a senior chemistry major I still use that site a lot.
Next if that still isnt helping come back to /r/chemhelp and post subjects that you need help on. Don't post open ended questions like this but things like "hey guys I don't understand how to calculate the number of neutrons can you help?" or "how do I determine how many and what type of orbitals something has?"
We are not your personal tutors but are willing to help you with tough areas.
Other way around actually. Over potential makes it so you make chlorine gas instead of oxygen
Here is a pretty good presentation about over potential
https://www.slideshare.net/toruhara/electrochemistry-1-the-basic-of-the-basic
And here is an example cell
(because can't put text in an image post)
Character tables:
I know that +1 is symmetrical and -1 is anti-symmetrical, but why is σv anti-symmetric in A2, and C3 rotation is anti-symmetric in E (2D doubly degenerate)? I kind of know the very basics, but am struggling with interpreting and actually understanding character tables - my prof did not explain any of this, and I looked up the above info online (also slide is borrowed from https://www.slideshare.net/saurabhmuktibodh/how-to-read-a-character-table) :/
Thanks in advance, any help would be greatly appreciated.
The charges of cation and anion are provided. May I know which part do you find it challenging?
Perhaps this may help you: https://www.slideshare.net/nazimah55/how-to-write-chemical-formulacomplete
This chart is showing a ranking of polarity and it had molecules with -COOH group more polar than molecules with -OH group
but to my great surprise, ethanol is shown with a higher dielectric constant than acetic acid which means ethanol is MORE polar than acetic acid
What gives???
I am very confused. I totally get boiling points with acetic acid having higher BP than ethanol but I absolutely do not get the polarity part. Acetic acid can do more hydrogen bonds than ethanol and hence has higher boiling point not polarity. Why does the polarity include hydrogen bonding? I thought polarity was basically an unequal distribution of electron density. Why would hydrogen bonding be involved in this?
The chart is this: https://snipboard.io/nqG4uM.jpg
In this paper You can see that is can happen. The equivalent of the BrCH2Ch2Br should be a lot more to prevent the formation of the dimer like in the paper (scheme 2). You can try using BrCH2CH2OH and oxidize it after.
The phrase you’re looking for is “solutions manual”. What edition of the book do you have? The problems are probably different between editions, but this should be the answers for the 7th Ed.
METHANOL IS POISON
now that thats said, having done nearly zero research: https://www.amazon.com/Slsy-Moonshine-Alcohol-Distiller-Stainless/dp/B086MXMDT8/ref=sr_1_2_sspa?crid=3Q1NT4NB1RZU8&keywords=distiller&qid=1639982112&sprefix=distiller%2Caps%2C123&sr=8-2-spons&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExTEhXM0hYMzBHR1NYJmVuY3J5cHRlZElkPUEwMzE2NDY3MUlDVUczNkhWMDZMViZlbmNyeXB0ZWRBZElkPUEwOTE2Mjk0SVc4T0I5UFFJMFpJJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ&th=1
is 140USD and should get you there. Im struggling to imagine a cheaper setup that you can just buy. I think a determined enough person could gerry rig an Instapot or something into a boiling chamber to reduce the price. But like... why?
I prefer to call these as redox reactions, along with your electrode reactions in electrochemistry. Technically you could consider normal reactions as redox as well too, as redox just requires at least one species undergoing either oxidation, reduction or both at the same time.
Oxidation numbers are helpful in determining what is reduced/oxidised which helps you determine oxidising/reducing agents and reactions what occur at anodes/cathodes in electrochemistry.
edit: fixed links
Take a look at figure 4. Looks like it’s just conjugation with glucuronide or hydroxyl groups.
While in grad school, I studied heterogeneous catalysis, and volcano plots are used by some peolple. The theory is that there is a "sweet spot" for the binding of the molecule to the catalytic surface. If it binds too strongly, the molecules will not interact. If they bind too weakly, they will not be bound to the surface long enough to react.
Here is a paper (Figure 8 is the volcano plot) https://www.researchgate.net/profile/Thomas_Bligaard/publication/222419318_The_Bronsted-Evans-Polanyi_relation_and_the_volcano_curve_in_heterogeneous_catalysis/links/0fcfd50e4b023e576f000000.pdf
Task is the extraction and purification of Nickel, I tried making own equation from the info provided in this (Pentlandite --> Pure Nickel) as I couldn't find it online. http://www.nickelinstitute.org/~/media/Files/NickelUseInSociety/AboutNickel/Production/Refining.ashx & here http://www.britannica.com/EBchecked/topic/414313/nickel-processing/81474/From-sulfide-ores. I know it needs quite a bit of work, but until I can get my chemical equation down can't really get that into it. From Australia, capitals on them are pretty common and yeah spelling error, it's "Sulphide," only want pure Nickel.
My school has free chemistry tutoring several days a week. This might be a good option for you if your school offers it. I'm going to second tehnomad's suggestion for Khan Academy's chemistry series. They also have a large selection of math videos and exercises, and physics videos too.
I'd also suggest going to office hours and introducing yourself to your chemistry professor, explaining the situation, and asking for their advice on brushing up on your skills.
Good luck to you!
I see, so you're just saying that might be a reason for the differences in Ksp values. I suppose that makes pretty good sense.
So then an equal amount of the silver ions are attracted to the CrO4 and the Cl ions? So why is the endpoint of the titration (when most of the AgCl has precipitated) generally when the AgCrO4 begins to precipitate? And why do the instructions in this slide show on the titration suggest just calculating the amount of silver that reacted with Cl ions (slide 12)? https://www.slideshare.net/MHJAH1D/mohr-method
Surely if this was true you would have to calculate both the amount of silver that reacted with the Cl and the CrO4?
I looked it up, and apparently the entropy of aqueous ions are standardized vs. H^+ whereas the entropy of elements (and other neutral species I guess) is expressed in absolute values: >Unlike standard enthalpies of formation, the value of S° is an absolute. That is, an element in its standard state has a nonzero value of S° at room temperature. The entropy of a pure crystalline structure can be 0 J mol^−1 K^−1 only at 0 K
>The standard entropy of H ion is zero. The reason that the Hydrogen ion has a zero entropy is because aqueous ions, such as the Hydrogen ion, are not absolute entropies. For this reason the Hydrogen ion is given a zero.
Calculator for DoU or Double Bond Equivalents (DBE)
If you don't have nitrogen or halogen in your compound, N and X will be 0. So C8H8O will have DBE = 5. Most likely a ring system, aromatic group and a C=O bond.
First thing you need to do is calculate how many double bonds is in the molecule the Double Bond Equivalent (DBE). Remember that a ring also counts as a double bond. Ex. benzene would have a DBE of 4, three for the double bonds and 1 for the ring structure. With the information given by the IR spectra you can figure out what functional groups might be present in the molecule. Separate the groups given by the NMR analysis (3H means that that it is probably an CH3 group. The δ is the the chemical shift, the higher the δ, means that the Hydrogens are close to an electron rich group or is attached to one. You can use this table to help you figure out where they could be. In the NMR data you can also notice these letters ( s, d, t, q). Those are the splitting of the peak Singlet(1 peak) , Doublet(2 peaks) , Triplet(3 peaks) , Quartet(4 peaks). The amount of peak minus one tells you how many neighboring Hydrogen's you have. So a CH3-O-R group would show a (3H,s) peak, while the peak of the CH2 in CH3-CH2-O-R would show (2H,q) peaks because it has 3 neighboring hydrogens.
ACD/ChemSketch is rather solid even in the Freeware version.
If that doesn't work try ISIS/Draw which seems to have been rename to Accelrys Draw
It is one of the solids collected.
Look over the following, which has some variations -- and pictures. Looks like a nice general source
http://www.eoearth.org/view/article/51cbf2b07896bb431f6aa5cf/
I think quizlet has games, but I don't use it so I don't know what the games are like.
Personally, when I memorize things, I use memorize.com and it works well for me, but it is dull as rocks.
By "tree diagram" they mean an NMR splitting tree. They're particularly important for coupled hydrogens and help you determine what's going on in a complex splitting pattern.
https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Map%3A_Organic_Chemistry_(McMurry)/Chapter_13%3A_Structure_Determination_-_Nuclear_Magnetic_Resonance_Spectroscopy/13.12%3A_More_Complex_Spin-Spin_Splitting_Patterns https://socratic.org/questions/how-can-i-draw-nmr-splitting-diagrams
ok, but where do I put 22.4 in the formula?? I found this r/https://socratic.org/questions/how-can-i-calculate-the-volume-in-liters-of-1-50-mol-cl2-at-stp but can't seem to decipher it,
I understand temperature is (T) pressure is (P) volume is (V) and amount of gas is (n)
I also know that STP temperature is 273k, 0 degrees celsius.
so in the formula for this problem we have (n) which is 1.50
for the temperature (T), would I put it in k, celsius or fahrenheit??
P would be 1
​
https://socratic.org/questions/how-much-heat-can-be-produced-from-the-reaction-mixture-of-50-0g-iron-iii-oxide- Follow this except you should know that Fe2O3 is your limiting reagent already.
I am assuming ΔE is internal energy because I can't think of what else it would be. Since ΔH =ΔE + Δ(PV) in answer C your volume is constant because it is in a fixed volume container. so Δ(PV)=0 leaving only ΔH =ΔE.
octahedral molecular geometry describes the shape of compounds with six atoms or groups of atoms or ligands symmetrically arranged around a central atom
I think this might be of use. It shows what the Z is for the van der Waals, then it's a matter of setting the equation equal to 1 to see what has to happen to go above or below 1.
http://en.citizendium.org/wiki/Compressibility_factor_%28gases%29
"CLOSE" doesn't fit within the button for me on Chrome.
There's a lot of whitespace on the modal (popup). I'm not sure 2 column left-right justify is the way to do this, honestly. Perhaps experiment with other displays and let the user pick between them? You have whitespace on the main page as well, so a few toggle buttons in the top right wouldn't hurt.
Maybe open the wiki page inside of the existing modal using an iFrame, instead of opening a new tab.
Are you using the gtag/Google tracking stuff?
Most glaring issue/easy fix is how long it takes to close the element popups:
function deactivateInfo() {
document.getElementsByClassName('info-container')[0].classList.remove('show');
document.getElementById('info').classList.remove('show');
for (let i=0; i<document.getElementsByClassName("removehronshort").length; i++) {
document.getElementsByClassName("removehronshort")[i].classList.remove('show');
}
}
Why don't you pass this some context/parameters so you don't need to do all this? The loop is especially bad and probably what's causing the slowdown, but you should really only need a single
document.getElementById(PASSED_PARAMETER).classList.remove('show');
Oh, since you're not already - consider using the actual bootstrap modal for your popup https://getbootstrap.com/docs/3.4/javascript/
Then you can use
$('#myModal').modal('show') $('#myModal').modal('hide')
I'd trim out as much unused CSS/SCSS in there as you can, as well.
You're overthinking this - the brand makes no difference. Get something like this, the more pieces the better.
Universal single indicator strips are pretty hard to use to begin with. I'm a much bigger fan of quad-indicator strips (like these), which might be easier to tell based on shade alone.
Chapter 10 (pages 248-283) basically cover that. Amazon doesn't really have any to sell (and my copy is quite valuable!) but you should be able to get it from your library or some other book seller.
FWIW this is the brand of both containers I bought (https://www.amazon.com/dp/B00CQGTGZQ/ref=twister_B08Z9HKYSN?_encoding=UTF8&psc=1).
Is there a way to test the concentration of the possible dangerous compounds? Like VOCs?
The containers are closed with a latch. Some of them smell more inside compared to others, but there definitely is a smell coming from the container itself. The new set of containers that I bought and washed have the same odor.
This is the set of containers I bought (https://www.amazon.com/dp/B00CQGTGZQ/ref=twister_B08Z9HKYSN?_encoding=UTF8&psc=1). They're made out of polypropylene.
If you have the organic chemistry book by clayden there‘s a pretty good explanation called "pushing electrons“ which does give some nice insight on how organic reactions are driven forward. Just to add to the many comments that were already posted.
https://www.amazon.com/Solutions-Vegetable-Versatile-Softening-Moisturizing/dp/B0019LWU2K
It doesn't really matter if it's all vegetable. Most pharmacies where I live (Europe) sell glycerine. It's not glycerine.
Alcohol is very good at extracting from herbs. You can just mix the glycerine with the tincture or you could evaporate some of the alcohol and get a denser tincture (just leave it out with the lid off), though it may not mix with the glycerine as readily then.
Any carbonate will react with acid. If you want to know the exact composition, you can check if a local research based university has an elemental analysis lab and ask 1) if they can accept samples from individuals (as opposed to other universities and organizations) and 2) how much they charge per sample. Explain your situation and what you are looking at and they might be willing to run it for you if it's a big Hassel trying to do it officially or if they don't accept samples from individuals. On the other hand, if you are just interested in what metals are present, you could get a hand held spectrometer & do a flame test.
It's already released! Check it out on Google Play and download it for free today: https://play.google.com/store/apps/details?id=com.tjosoft.theion
If you like the app, leave a review and share it with your friends! If you have any questions or encounter issues, feel free to mail [email protected]
Thank you for your support.
​
Regards,
TheIonApp Developer
You can download it for free on Google Play! It's constantly being improved, so feel free to leave a review. Thanks.
https://play.google.com/store/apps/details?id=com.tjosoft.theionapp
Get it on Google Play for free (Click HERE)
This App provides an Ionic Formula Calculator that is free-to-use, intuitive thanks to modern UI/UX and selection from a Periodic Table.
For maxiumum resposiveness it is developed using the newest, top-of-the-line standards and techniques.
It is lightweight and does NOT require mobile data to function - all in a mere 25MB.
Any feedback and/or bug reports are much appreciated. Thanks!Certain Issues are known and they are to be fixed as soon as possible, certain links may need up to 48h to work correctly.
Rate it on Google Play and send feedback to [email protected] - support is much appreciated.
Thank you for your support!
​
^(Copyright 2020 © tjosoft)
Get it on Google Play for free (Click HERE)
This App provides an Ionic Formula Calculator that is free-to-use, intuitive thanks to modern UI/UX and selection from a Periodic Table.
For maxiumum resposiveness it is developed using the newest, top-of-the-line standards and techniques.
It is lightweight and does NOT require mobile data to function - all in a mere 25MB.
Any feedback and/or bug reports are much appreciated. Thanks!Certain Issues are known and they are to be fixed as soon as possible, certain links may need up to 48h to work correctly.
​
Rate it on Google Play and send feedback to [email protected] - support is much appreciated.
Thank you for your support!
​
^(Copyright 2020 © tjosoft)
Another simple example would be hex-2-en-1-ol (correct) and not hex-2-ene-1-ol (wrong). Just one of the quirks of formal IUPAC nomenclature...
Resources:
Chemistry website: Master Organic Chemistry
Free phone app: Organic Chemistry App
If you just want quick models of molecules that you can see in 3D to memorize them, there's an app that let's you build molecules in 3D: https://play.google.com/store/apps/details?id=com.alextepl.molconstr
I try to teach them in my labs. No matter how bad the TAs were, you still had chances to learn how to distill, recrystallize, separate, filter, and set up apparatus, I hope.
This is a great resource: The Organic Chem Lab Survival Manual: A Student's Guide to Techniques 10th Edition by James W. Zubrick
https://www.amazon.com/Organic-Chem-Lab-Survival-Manual/dp/1118875788
Two books are a must;
https://www.amazon.com/dp/B00E2RHKDC/ref=cm_sw_r_cp_apa_i_6nspFbASHX6XK
https://www.amazon.com/dp/0195187989/ref=cm_sw_r_cp_apa_i_DospFb6MG9Z3C
The first book is all technique... how to set up reactions, dry glassware and solvents, use schlenk line etc. The second book contains standard procedures for acetylation, oxidation, reduction, organolithium, etc. Great books.
Thank you for your reply, if I can ask some follow up questions? I am placing these model kits and figurines in my bedroom, I'm assuming these would not be in a well-ventilated area, and would it be worth investing in an acrylic box to place them in to seal the outgassing? For example like this one. https://www.amazon.com/Lanscoe-Countertop-Protection-Collectibles-23x23x23cm/dp/B07LFK4BC4/ref=pd_sbs_201_1/131-7746053-6280238?_encoding=UTF8&pd_rd_i=B07RWGYTNF&pd_rd_r=25a0d2c0-5b4a-4042-b9db-4390a1d50c10&pd_rd_w=lRiCG&pd_rd_wg=F5ddS&pf_rd_p=bdc67ba8-ab69-42ee-b8d8-8f5336b36a83&pf_rd_r=P69JEDE83H8BHXWHJ383&refRID=P69JEDE83H8BHXWHJ383&th=1
Hopefully this table from Bruice's Organic Chemistry textbook helps
I'm not using a strip, I'm using a couple different test kits: API and Salifert
The test I just ran was in DI water, so sulfate shouldn't be an issue.
I am not looking for 4ppm. I know the concentration in this fertilizer solution is on the order of 20-75 thousand PPM. I want to be able to understand how this can be so given the information I have on the ingredients
It looks like a version of Lehman's text, but I don't think it's this one.
What about something like these?
I’ve only ever done it on a laboratory scale, so if you’re using a reasonably large tank, I don’t know how well it will work.
You need a gas canister of nitrogen or argon. You can buy one at a local gas supply store like praxair. You might also find one online. Run some hosing from the gas canister to the bottom of your tank and open a steady bubble for 30min or so.
Wikipedia says that ammonium sulfite will consume oxygen from water. I’ve never tried this, but if you don’t mind introducing salts into your water, this may be simpler.
https://www.amazon.com/Ammonium-Sulfite-Monohydrate-97-3-Certified/dp/B00LZ63D16
A lot of goggles fog up. It's a general problem. If you're willing to buy new goggles, there are ones that are anti-fog. They are not perfect because water finds a way to condense, but could be better than what you have.
For grad school in pharmacology, you really don't need MO theory. In med chem, only if you are doing theoretical calculations. Klein's organic text or his books mentioned u/rightbackatcha/ are good with arrow-pushing, as is Week's book on the subject. https://www.amazon.com/Pushing-Electrons-Students-Organic-Chemistry/dp/0030206936
Well I didn't intend to use it strictly as a powder funnel if at all, so my question remains, what size would the the most similar to this one, mentioned previously?
Well there is the old sodium acetate trihydrate supercooled liquid. It has a metal clicker that causes the sodium acetate to freeze, releasing heat. Boil the pack in water to melt the sodium acetate.
Does it count if they already exist?
Found this one on Amazon relatively cheap with a quick search for transfer Dewar. Being new it should be clean, maybe give it a rinse with clean water. I would recommend getting a cooler with some ice, or dry ice would be better, put your transfer dewar with the liquid nitrogen in the cooler (leave the cooler cracked open for venting) and drive home to make your ice cream, etc. A good transfer dewar can store liquid nitrogen all day if covered with the foam cap, but the dry ice will prevent too much boil off during the transportation process
Read the 13th Element or at least the first few chapters.
According to this book, the Lucas test will produce heat upon reacting with an allyl alcohol, despite it being primary, due to the stability produced from the carbocation. So the Lucas test is conclusive, the melting temp (according to Chem Spider) is around 34 ^o C, and the NMR spectra is a total match
I have a pair of these in my lab. For me, at least, they rest on my forehead and cheekbones and put zero pressure on my nose. I wear them over my normal glasses.
I like "NMR and Chemistry: An introduction to modern NMR spectroscopy" by Akitt and Mann. It has a full section on 2D NMR, including some interpretation. It's only a portion of the book, but it was helpful for me (though I had a lab class on NMR that also taught some interpretation so I'm not sure if this book is quite the "for dummies" level).
You might want to pick up a chemistry model set -- it really helps people who have a hard time visualizing 3D structures! Your student bookstore might have them, but if they are out, this is what you're looking for :)
http://www.amazon.com/Organic-Chemistry-Molecular-Model-pieces/dp/B002MNSC9Y