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I got into University by Doris Fovingbock - Sun, 06 Aug 2017 16:10:13 EST ID:+YUSEic8 No.78765 Ignore Report Reply Quick Reply
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So I went back to college recently to pursue chemistry, I just got accepted into a pretty good uni to do Organic chemistry.

Now since i'm not that young anymore I really need to do well and not fuck this up, so since i really enjoy chemistry and need to make this work i've been putting a whole load of effort into making sure it goes well.

Please give me some recommendations for pre uni reading so I can get a head start.

Also share experiences? I did a pretty short and condensed course to get here I learned all the basics during that but i've stilled missed out on a lot of stuff an 18 year old would have done at the college level, so i'm expecting my first week at uni to be a bit overwhelming and full of things i need to learn but then i've heard from a few people that it's like that for everyone no matter how much extra reading you've been doing.
25 posts and 4 images omitted. Click Reply to view.
William Sicklefune - Tue, 28 Nov 2017 11:20:29 EST ID:6w3Nr5Vv No.78926 Ignore Report Quick Reply
Always know that you're going to use carbon, hydrogen, and oxygen (basically carbohydrates) from here on out, so no using acids, aqueous, etc...
Phyllis Hillynod - Tue, 28 Nov 2017 11:23:12 EST ID:m7C8Nxby No.78927 Ignore Report Quick Reply
Always remember that you're always doing carbohydrates, ie carbon, hydrogen, and oxygen, that means no using acids, etc...
William Sicklefune - Tue, 28 Nov 2017 11:23:17 EST ID:6w3Nr5Vv No.78928 Ignore Report Quick Reply
Always remember that you're always doing carbohydrates, ie carbon, hydrogen, and oxygen, that means no using acids, etc...
William Sicklefune - Tue, 28 Nov 2017 11:24:52 EST ID:6w3Nr5Vv No.78929 Ignore Report Quick Reply
I apologize for the spam
Cornelius Blucklecocke - Wed, 29 Nov 2017 08:14:21 EST ID:+YUSEic8 No.78930 Ignore Report Quick Reply
Dude what are you talking about?

Mathematics by Hamilton Brusslested - Thu, 05 Oct 2017 11:42:33 EST ID:+YUSEic8 No.78876 Ignore Report Reply Quick Reply
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I'm struggling with the maths of chemistry.

Anyone else hate the maths side of things? I see it as a necessary evil but I still hate it.
Hugh Songerwadge - Fri, 03 Nov 2017 08:22:25 EST ID:fF5X4qiu No.78889 Ignore Report Quick Reply
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same issue here
Ebenezer Nuvingstock - Sat, 04 Nov 2017 12:44:11 EST ID:sFJy067c No.78890 Ignore Report Quick Reply
yea shit will jump out at you like logarithmic rules or exponent rules, just gotta keep track of it all. i find it helps to write every step, no shortcuts in the calculator
press !XIxc6BpKnU - Tue, 07 Nov 2017 15:45:46 EST ID:4coI32Fl No.78897 Ignore Report Quick Reply
im a bit ashamed to admit it but im still really happy i never had to do quantum physics .

one sort of "trick" that helped me to keep my motivation high enough to actually practice enough to pass was to come up with thought experiments or bullshit problems that required me to use the maths. using the idea work as play to your advantage gets really hard with stuff like a fucking particle on a sphere

a part from that i often find myself thinking "wow thats really interesting, im sure this is a fascinating concept, but id rather leave this to somebody else that actually enjoys this. id rather do retrosynthesis or let a computer do the calculating or eat ass right now

is there a particular area that you are struggling with

i remember those by using base ten stuff. you can quickly derive those by messing around with potencies of ten
Ian Pucklemare - Wed, 15 Nov 2017 11:47:19 EST ID:+YUSEic8 No.78907 Ignore Report Quick Reply
>is there a particular area that you are struggling with
Everything really, it's just i'm pretty fresh to all of this and have spent a long time out of education before going back into it. Things can kind of make sense when i tackle them head on but if a couple of days after that I come across a problem, i'll struggle to actually think of the best way to calculate an answer.

I can't think of any problems off hand but if one comes up i'll post it here.

>gets really hard with stuff like a fucking particle on a sphere
I did have some problems on this and it was bullshit. Can't the computers do all of this and i'll stick to learning my way around the organic labs.
Basil Bucklesuck - Mon, 20 Nov 2017 22:44:13 EST ID:pmYWBMz8 No.78919 Ignore Report Quick Reply
I used to sip whiskey and do chemistry hw when I was going to community college

I somewhat grew to like the elegance of trying to solve a problem with a line of fractions and words that cancel out.

gib stank token plis by leibniz enters an alchemy society - Wed, 15 Nov 2017 12:52:49 EST ID:UwpwKm1P No.78908 Ignore Report Reply Quick Reply
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Bombastus !uYErosQbLM!!Mybq1UbK - Thu, 16 Nov 2017 04:07:15 EST ID:Fd7VfiYK No.78909 Ignore Report Quick Reply
This can be a good thread. The society itself isn't based around alchemy but to achieve the golden standard through a thought process. Something against the scientific method but still very valid.
It used to be some sort of annoying half-cult but actually provided introspective determination for the members so long as you sign away a bit of your freedom and resources. Kinda like a church or a society of chemists (ACS) that later developed from this structure.

Leibniz's concept of a metaphysical Monad can fit nicely into the school of yestercentury. Something that I have yet to be able to understand fully but can see how it would tie to the alchemical societies back then. He predicted nuclear physics through the destruction of monads (mind to matter "transfer) instead of the more widely accepted concept of indivisible "particles". Though obsolete, it can still be applied today.

We need more metaphysical quantum alchemists today.

Organic synthesis by Charles Hongerpare - Sat, 28 Oct 2017 09:13:55 EST ID:EfFKvnWj No.78885 Ignore Report Reply Quick Reply
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Anyone have any books on organic synthesis. The basics how Synthesis works?
Hedda Fandleforth - Thu, 02 Nov 2017 13:56:42 EST ID:+YUSEic8 No.78888 Ignore Report Quick Reply
Buy almost any Organic Chemistry book...

Chemistry is Fucking Crazy by John Segglehall - Thu, 12 Oct 2017 18:54:47 EST ID:UeKrF7rB No.78879 Ignore Report Reply Quick Reply
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I'm barely learning about hybridization theory and already it's requiring my fullest attention and focus to keep up with the concepts. Normally I can half-pay attention in anything from anatomy to calculus to history and grasp the underlying concepts with ease. Is it because I can't see the orbitals and electrons so my mind has difficulty making a "mental map" of it? I thought chem would be as easy for me as all the other sciences but it's shockingly complicated. I'm not even in O-chem yet. Will my brain adapt to this new mode of thinking and I will be okay?
Molly Chindlematch - Mon, 16 Oct 2017 20:03:15 EST ID:JlSfW3Ow No.78880 Ignore Report Quick Reply
tis normal, it's a good sign to study, good luck!

Anhydrous Ethanol/Methanol by Sidney Hangertack - Fri, 18 Nov 2016 13:57:09 EST ID:zsw9I8fO No.78350 Ignore Report Reply Quick Reply
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How do I go about using something like this (pic) to make anhydrous ethanol or methanol?
7 posts and 1 images omitted. Click Reply to view.
Bombastus !uYErosQbLM!!Mybq1UbK - Sat, 10 Dec 2016 18:12:24 EST ID:01P1ms0Q No.78392 Ignore Report Quick Reply
Just fucking buy it. No don't do that with the sieves. If the sieves work, they work, if they don't, they don't.

You can use anhydrous copper sulfate (white) and it'll turn blue in the solution. Keep adding copper sulfate until no more turns blue.

Or you could just buy anhydrous ethanol which is often cheaper than anhydrous copper sulfate and molecular sieves.
Beatrice Penningspear - Fri, 08 Sep 2017 11:10:10 EST ID:69GZASh3 No.78843 Ignore Report Quick Reply
4A seive, Watch NileRed (youtube), you will find your example there
Fucking Foppergold - Sun, 10 Sep 2017 18:20:18 EST ID:h12BVAdp No.78845 Ignore Report Quick Reply
y u necrobump
Henry Cramblehall - Tue, 12 Sep 2017 18:55:54 EST ID:M7FrGPbw No.78846 Ignore Report Quick Reply
its a pretty useful post dont ya think. plus this board is slow enuff
Betsy Nugglesud - Fri, 06 Oct 2017 15:54:21 EST ID:UoTssc8h No.78878 Ignore Report Quick Reply
magnesium sulfate won't take it all the way to 200 proof but it will get you slightly past azeotropic ethanol.

Sieves are easy to use; you don't even need to distill anything, and they can be regenerated by simply putting them in a pyrex flask (or improvised equivalent) and heating with a torch while shaking them up until no more condensation appears at the mouth of the container. They will absorb a little water while cooling but it's not much of a problem unless the humidity is super high or you need ABSOLUTELY dry ethanol. If in doubt stick a coffee filter filled with another drying agent (like mag sulf.) in the opening while it cools, so any air entering is relatively dry. Either way, the sieves will still make ethanol way drier than using MgSO4. They do take a while to work, but all you have to do is dry them out, dump them in, let it sit a few days, then filter off the sieves.

Opium Column Chromatography by Bombastus Werrywag - Tue, 11 Jul 2017 21:56:30 EST ID:QGxEeR56 No.78746 Ignore Report Reply Quick Reply
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Without calcium chelation, this is the best way to achieve pure morphine from a layer of puddy or otherwise concentrated poppy residue.

A mixture of 9:1:1 DCM Methanol Diethylamine will produce an elution of reticuline impurities at 0.7-0.9, codeine at 0.45, and morphine at 0.2. Other opium oils either elute at 1 and heavier, coloured oils will not elute at all (or under 0.02).

Running this column simulation once gave me morphine as light brown needles which drew in moisture and became wet after 3 hours. The second time, morphine did not completely come through as shown on TLC short wave UV light as what I expected to be high amounts of meconate salts along with insufficient methanol miscibility. This was solved by adding an additional 1 equivalent of methanol thereby moving the morphine. This gave darker brown crystals which again absorbed water after 3 hours. Full morphine elution towards 100% in a gradient column gave 2% of brown oils. This potentially allows a column to remove codeine and oils and a methanol flush to remove the morphine with a 5-10% heavy oil contamination.

Will update this thread with more conclusions and projections.
13 posts and 2 images omitted. Click Reply to view.
press !XIxc6BpKnU - Wed, 06 Sep 2017 10:17:54 EST ID:cWIAjghj No.78837 Ignore Report Quick Reply
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its not hate. i think the kids nowadays call it tsundere. thats basically chinese for trying hard to get.
ill compile the few papers ive got so far soon, damn shame 420chan doesnt support pdfs.
David Buzzwell - Wed, 06 Sep 2017 14:48:20 EST ID:hBAZGxou No.78838 Ignore Report Quick Reply
Mesylic acid? I'm pretty sure methanesulfonate isn't nucleophilic enough to attack an ether. Most demethylations I'm used to hearing about use hydrobromic acid or pyridine hydrochloride. Hydrogen iodide is very effective but also expensive.

you can use Zn powder / hydrochloric acid to reduce terminal nitrostyrenes like for mescaline; it's really just nitropropenes that are "hard" to reduce (although Al/Hg licks it)

Aureolus Werrywag - Thu, 07 Sep 2017 00:47:08 EST ID:HizIkIMY No.78839 Ignore Report Quick Reply
droopbox it up fam

there's some paper here that requires something i can't remember
or you can go with hydrobromic acid in acetic acid solution but that's harder to find.
Aureolus Werrywag - Thu, 07 Sep 2017 00:53:36 EST ID:HizIkIMY No.78840 Ignore Report Quick Reply

Also US patent US5071985
A mixture of 3.15 g (10-2 mole) of oxycodone, 28.3 g (3.10-1 mole) of methanesulfonic acid and 2.2 g (1.5.10-2 mole) of DL-methionine are heated to 40° and stirred at 12 hours.
Precipitate with ammonia to 9, extract with DCM. Chloroform column with a methanol gradient. 72% yield.
Theophrastus Werrywag - Sun, 01 Oct 2017 01:08:19 EST ID:m5AB1YJF No.78874 Ignore Report Quick Reply
Ima just save this here







Comment too long. Click here to view the full text.

Psilocetin by Sidney Chuffingdock - Fri, 15 Sep 2017 18:22:23 EST ID:yzU9mG3u No.78851 Ignore Report Reply Quick Reply
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How do you properly synthesize 4-aco-dmt
Steps, glassware needed
Proper chemistry explained please
Beatrice Sinningleck - Fri, 15 Sep 2017 20:21:51 EST ID:ns8cUDqD No.78852 Ignore Report Quick Reply
Bombastus Werrywag - Fri, 15 Sep 2017 23:50:12 EST ID:H0bl+OaX No.78853 Ignore Report Quick Reply
extract psilocin from shrooms
reflux in acid
add acetic anhydride
Thomas Grandbanks - Wed, 20 Sep 2017 17:08:25 EST ID:hBAZGxou No.78859 Ignore Report Quick Reply
this is basically impossible because psilocin is very unstable and so doing ordinary unqualified idiot garage chemistry on psilocin will turn it into useless polymers. if you freeze-dry the mushrooms, grind them up, extract into water under nitrogen, hydrolyse with alkali for a few hours also under nitrogen, extract into chloroform under nitrogen, and treat this with acetic anhydride and pyridine under nitrogen, maybe you have a chance. but you've probably not even considered that the whole rxn has to occur "under nitrogen" or that e.g. reflux in acid as one dumbass said will tear apart that indole like a dog playing with a soccer ball. furthermore it's not even any more potent than what you started with so you're wasting mushrooms. and if you meant to do the synthesis from scratch, you have absolutely no chance so just read the tihkal entry and sob quietly about your inability to acquire 4-hydroxyindole, oxalyl chloride, dimethylamine, or LAH.
Schepperschop - Sat, 23 Sep 2017 08:34:06 EST ID:xTIigKo1 No.78867 Ignore Report Quick Reply
Enjoy your fungal infection
Lydia Honeystock - Sat, 30 Sep 2017 06:28:55 EST ID:H2dReURr No.78872 Ignore Report Quick Reply
This may sound retarded... but I've been dreaming of a psilocybe gut flora or equivalent. Just imagine it.. whenever you ate too much grain, you'd be tripping balls!

Ketamine by Hedda Bannerhudge - Wed, 20 Sep 2017 11:01:09 EST ID:VYddMeH/ No.78854 Ignore Report Reply Quick Reply
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Can you use a dehumidifier to dry 0.5-1liter of liquid ketamine or would it suck up some of the ket as well (I know of the other methods)

How do you flavour ket.Do you just simply add in some food flavouring liquid while you are drying it ? How do you workout how much to add into it ?
2 posts and 1 images omitted. Click Reply to view.
press !XIxc6BpKnU - Thu, 21 Sep 2017 04:59:16 EST ID:NK/Aohbx No.78861 Ignore Report Quick Reply
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okay, thats fucking retarded but okay. i dont recommend throwing vanillin into your nostrils but whos gonna stop you.atleast its not menthol

you could theoretically dry your ketamin by placing the solution next to a dehumidifier preferably in a airtight container, but its going to take much longer than just throwing it in a glas pan and carefully heating it. then just scrape it up, grind in a mortar and slowly add small portions of pure vanillin - not fucking baking aroma - and keep grinding. sample and repeat until youre either cant feel your face anymore or are deep in the flavour town hole
press !XIxc6BpKnU - Thu, 21 Sep 2017 15:24:58 EST ID:OHYz+LTM No.78862 Ignore Report Quick Reply
if you intend to sell your vanilla sugar, to anybody that you do not upfront inform of such stupidity, you should feel really bad nb
Archie Blittingmurk - Mon, 25 Sep 2017 17:01:57 EST ID:+YUSEic8 No.78869 Ignore Report Quick Reply
if someone had "vanilla K" i'd refuse to buy... unless i was desperate for K for some reason.
Eliza Dozzlehall - Thu, 28 Sep 2017 20:17:54 EST ID:qV/Fy1Bz No.78870 Ignore Report Quick Reply
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I can't even comprehend him writing all of this and thinking it's a good career choice unironically.
Lydia Honeystock - Sat, 30 Sep 2017 06:26:05 EST ID:H2dReURr No.78871 Ignore Report Quick Reply
What if it had sassafras extract as flavoring?

A /chem/ thread not about drugs by Poolboy Steve - Wed, 20 Sep 2017 11:31:48 EST ID:yU3xLtgU No.78855 Ignore Report Reply Quick Reply
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This is a thread about pool chemistry since it's pertinent and relevant to my daily duties.

What I wanna know is if Sodium Bicarbonate has a pH of about 8 how then is it helping me keep my pH between 7.4-7.8?

Seriously, this is the hardest thing to explain to non chemistry enthusiast coworkers of mine. That and the relationship between Cyanuric Acid and Free Chlorine
2 posts and 1 images omitted. Click Reply to view.
Basil Clumblehall - Thu, 21 Sep 2017 16:00:09 EST ID:d8sALoQJ No.78863 Ignore Report Quick Reply
Well giving the pH value of anything assumes it's in a solution and since pOH and pH exist in equilibrium one can be calculated from the other which is why we just use pH. And I get that it forms a buffer I'm wanting to know chemistry specifics because I've been googling for months with no clear answer. Nobody cares how it works they just use it. I understand it has something to do with the controlled release of H+ and OH- in some sorta cycle.
press !XIxc6BpKnU - Fri, 22 Sep 2017 05:34:58 EST ID:OHYz+LTM No.78864 Ignore Report Quick Reply
specifics on the carbonate/bicarbonate buffer system or on the "chlorine buffering" of cyanuric acid? whats your level in chemistry?
Priscilla Summleworth - Fri, 22 Sep 2017 18:43:30 EST ID:hBAZGxou No.78865 Ignore Report Quick Reply
b/c it's dilute silly

didn't you ever have a chemistry set as a kid? dilution is like one of the only things you can even do with them these days

if you add 100 gallons of pH 8 to 1000 gallons of pure water you're gonna get a pH of like 7.2
Bombastus Werrywag - Fri, 22 Sep 2017 22:59:16 EST ID:TigEi9EW No.78866 Ignore Report Quick Reply
dilute... or dilaudid?
Phineas Blatherman - Sun, 24 Sep 2017 16:43:22 EST ID:EmAQ3RSJ No.78868 Ignore Report Quick Reply
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My level in chemistry is like 1000 level course in college plus more reading on my own. I understand how cyanuric bonds to the FC to keep it in the pool. I'm fuzzy on the carbonate buffering. pH is wacky in a few places and I'm trying to pin down a cause and also they may have me train employees and I like to know everything and assume others would as well instead of having to dig for the information like me.

Tree growing by Ian Blackfuck - Sun, 18 Jun 2017 11:26:00 EST ID:ZPX2kpEE No.78694 Ignore Report Reply Quick Reply
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I just read on circlejerk that some trees can reach 100ft to 300ft in a matter of a few years, if this is true why dont we just farm trees instead of cutting down rain forests?

I mean it seems possible, you might have to stick to certain types of wood but still, on top of that you could plant a shit load more trees to help with climate change.

I'm no expert though, just some thoughts.
12 posts omitted. Click Reply to view.
Bombastus Werrywag - Tue, 11 Jul 2017 17:33:42 EST ID:QGxEeR56 No.78743 Ignore Report Quick Reply
Hemp is not a tree.

He is right, otherwise and as a general rule of thumb.
Frederick Hinkindock - Sat, 29 Jul 2017 06:16:23 EST ID:/I6TPxLI No.78757 Ignore Report Quick Reply

Bamboo just called. Told me to say what up to Hemp, and fuck off to OP.
Barnaby Hallyspear - Mon, 04 Sep 2017 04:09:20 EST ID:W4pZU8sF No.78826 Ignore Report Quick Reply
>>78757 bamboo is also not a tree
Aureolus Werrywag - Thu, 07 Sep 2017 00:54:53 EST ID:HizIkIMY No.78841 Ignore Report Quick Reply
make like a tree and fuck off

Nell Cinkinped - Thu, 07 Sep 2017 14:53:13 EST ID:hBAZGxou No.78842 Ignore Report Quick Reply
bamboo and hemp are both very strong in tension but also very flexible and therefore not very strong in compression. there are different kinds of strength required for different applications

Dutch team thinks liquid metal can help cool nuclear fusion reactor walls by Fucking Pittridge - Mon, 07 Aug 2017 07:34:27 EST ID:X+zhyYNN No.78770 Ignore Report Reply Quick Reply
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My penis is so rock hard right now.

6 posts and 1 images omitted. Click Reply to view.
Schepperschop - Fri, 01 Sep 2017 11:13:13 EST ID:81NLKdBS No.78812 Ignore Report Quick Reply
I have never looked a woman I love directly in the eyes .
Wesley Menkinput - Fri, 01 Sep 2017 11:41:35 EST ID:m/qfXvjQ No.78813 Ignore Report Quick Reply
Do they also think that jet fuel can melt steel beams?
press !XIxc6BpKnU - Fri, 01 Sep 2017 15:18:42 EST ID:PJ0/E4z+ No.78814 Ignore Report Quick Reply
ill never look you in the eye as i fuck your fat as fat ass ass. i promise balls wont touch.
shitpost quota filled.
Schepperschop - Sun, 03 Sep 2017 18:47:58 EST ID:81NLKdBS No.78823 Ignore Report Quick Reply
You dont know what love is you are a homosexual.
Theophrastus Werrywag - Mon, 04 Sep 2017 05:38:16 EST ID:npebQgFy No.78828 Ignore Report Quick Reply
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can i play pls

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