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Newtons law by Basil Honeyhood - Wed, 13 Dec 2017 13:10:12 EST ID:vpcNyXDE No.78940 Ignore Report Reply Quick Reply
File: 1513188612059.jpg -(23150B / 22.61KB, 633x619) Thumbnail displayed, click image for full size. 23150
I'm lost on this physics question please help
>>
Caroline Druttingham - Tue, 23 Jan 2018 03:09:42 EST ID:bd1Er6gm No.78984 Ignore Report Quick Reply
>>78940
2 forces, force of gravity Fg down and air resistance Fair up combine to form Fnet. Newton's 3 Laws says Fnet = mass * acceleration which is given as a=2m/s^2. So Fnet = 1.0kg * 2.0m/s^2 = 2.0 N. Force of gravity is Fg = mass * g where g is 9.8m/s^2 so Fg = 1.0kg * 9.8m/s^2 = 9.8N. Fg - Fair = Fnet so Fair = Fg - Fnet = 9.8N - 2.0N = 7.8N.
>>
Katsuragi !/pe1aKvMmQ - Thu, 24 May 2018 22:24:44 EST ID:4Q6JexVr No.79135 Ignore Report Quick Reply
>>78940
Tell your instructor that you had to go to a chemistry message board in order to even understand his question on Newtonian Mechanics. I think that's unfairly difficult.


Dutchsinse mentioned the chan websites so I'm gonna post by Fuck Guttingtit - Mon, 15 Jan 2018 21:14:28 EST ID:LvZjcpdi No.78972 Ignore Report Reply Quick Reply
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https://www.youtube.com/watch?v=yR4w0Yy85jA
I've been watching a cool youtube channel about plate tectonics affecting earthquake and volcanoes. Largely from seeing how they can effect the weather and cause massive climactic changes that significantly effected peoples in the far ancient past....anyway he mentioned telling people on the future about it. I don't go to the future anymore because its all porn and you can't have a meaningful conversation, whereas 420chan you can and people here tend to be woke a f as well as baked a f. I am currently ripped and decided to post it here along with an obscure Byzantine meme.
>>
Katsuragi !/pe1aKvMmQ - Thu, 24 May 2018 22:26:38 EST ID:4Q6JexVr No.79136 Ignore Report Quick Reply
>>78972
All of your chans are ridiculous. Not even funny, bad simulation. I don't like it.


Alternatives... by Angus Drumblestone - Fri, 17 Nov 2017 21:12:19 EST ID:+YUSEic8 No.78910 Ignore Report Reply Quick Reply
File: 1510971139080.jpg -(153912B / 150.30KB, 800x640) Thumbnail displayed, click image for full size. 153912
I've been on 420chan for a long time, and so i ask this with respect. Is there a better place that some of the more serious chemists here talk about things?

Not to hate on 420chan but I feel like there may be better places to discuss chemistry with people who are like minded. Perhaps IRC?
13 posts and 4 images omitted. Click Reply to view.
>>
Clara Crarrychock - Sun, 17 Dec 2017 13:44:00 EST ID:rhoRa3mp No.78947 Ignore Report Quick Reply
>>78938
Actually yeah that didn't cross my mind, don't loose your job over some 420chan posts.

Anyway i'm still working on making /chem/ a better place but you guys need to give me at least a few more years to catch up.
>>
Clara Crarrychock - Sun, 17 Dec 2017 13:48:50 EST ID:rhoRa3mp No.78948 Ignore Report Quick Reply
>>78947
Aww my IP changed for the first time in like a year.
>>
press !AX.nZBombY - Thu, 21 Dec 2017 15:08:50 EST ID:urbKaVqv No.78956 Ignore Report Quick Reply
>>78946
are you sure its unregulated and unwatched? that seems suspicious.
in germany we have multiple watch lists, some of which are "volunatrily" followed by suppliers.

id love me some, all youd need would be some hydrogen and Pd, but ill stick with postponing my "mescaline from baking aroma, antiseptic and rc fuel" pipedream for now
>>
Bombastus Werrywag - Fri, 05 Jan 2018 16:46:24 EST ID:uvAHW/WE No.78963 Ignore Report Quick Reply
>>78956
Yes. It's not specifically banned by anything I know of. He's been slowly taking a few mgs from it from work every every week and throwing it in a pile at his house. I can tell him to sell it on ebay or on his local craiglist, too. Probably among some other research chemicals used for plastics and vinyls as he does that for a hobby in his barren wasteland of a house in my barren wasteland of a town in the giant barren wasteland that is Canada.
>>
Cornelius Bunham - Thu, 11 Jan 2018 22:17:09 EST ID:hBAZGxou No.78967 Ignore Report Quick Reply
Learn to speak Russian


Mercury Storage by Polly Pockman - Thu, 04 Jan 2018 19:11:36 EST ID:UniRKo9r No.78958 Ignore Report Reply Quick Reply
File: 1515111096151.jpg -(3326056B / 3.17MB, 5312x2988) Thumbnail displayed, click image for full size. 3326056
sup /chem/

I have a small elements collection and I needed to know about the storage of a small amount of mercury...

I have (attached) glass vial bought from Hobby Lobby for like 2$. I am wondering if it would hold a small amount of mercury. We're talking 5mL maximum, probably less (may fill up an inch of the bottom of the vial). The top glass cork will be wrapped with a few layers of parafilm from my lab. It will be on a sort of "display" shelf, not behind any glass but out of reach to be knocked over. I am more worried about the vapors that could possibly form over time than any spillage.

Any input would be appreciated,
Thanks
>>
Polly Pockman - Thu, 04 Jan 2018 19:12:37 EST ID:UniRKo9r No.78959 Ignore Report Quick Reply
1515111157151.jpg -(4851478B / 4.63MB, 5312x2988) Thumbnail displayed, click image for full size.
Here is another pic of the thickness of the bottle bottom/walls
>>
press !AX.nZBombY - Fri, 05 Jan 2018 15:20:50 EST ID:4D6UnT/b No.78960 Ignore Report Quick Reply
id get a thinner container to let it show more of its shiny toxicity, and maybe get something threaded. doesnt look as chemistry-y but itd be much more convenient

you could store it under mineral oil to reduce oxidation and evaporation

BORN TO DIE //
ORGANO MERCURY IS A FUCK //
i am neurotox man //
410,757,864,530 DEAD CHEMISTS
>>
Bombastus Werrywag - Fri, 05 Jan 2018 16:42:53 EST ID:uvAHW/WE No.78961 Ignore Report Quick Reply
>>78958
get yourself these
https://www.ebay.com/itm/10Pcs-13x100mm-Laboratory-Glass-Test-Tube-OD-13mm-Length-100mm-My-Glassware/122740044048?hash=item1c93e07110:g:WakAAOSw4~VZgrKl

and seal the ends using a propane torch. look up "ampoule sealing"

That way you can still play around with the mercury in a fun size. When not in use, wrap the test tube in a piece of aluminum foil coated bubble wrap insert. If the mercury escapes, it'll go right into the aluminum which will make it less hazardous as it's a mercury capture mechanism. For spills, use powdered sulfur. You can buy that on ebay in like 100g quantities.
>>
Cornelius Dummlelare - Sun, 07 Jan 2018 02:26:09 EST ID:UniRKo9r No.78965 Ignore Report Quick Reply
>>78960
>>78961
Thank you for the replies. I ordered myself some of the shown test tubes and am not sure how long they will take to arrive to me. I currently have a very small amount (barley covering the bottom) held in the glassware shown, with several layers of parafilm and it is being kept outside. I believe this should sufficiently hold until I am able to make ampules.

Cheers


I do a lot of cough syrup by Son of an organic chemist - Mon, 23 Oct 2017 16:30:22 EST ID:yfT/VnIi No.78884 Ignore Report Reply Quick Reply
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i am artist who does a lot of dissocitatives

dissociatives involve a lot of nonsense
i have no talent in chemistry but i wanted to show you this
this KLSSTR is nonsense (benzene?)

but alas
alchemy is the precursor to chemistry
six rocks can be achemically arranged in a 6grid if you write K L S S T R in sharpie on them
use this knowledge to advance the chemistry my dear friends

P.S.

My dad is a bretty good chemist
https://www.google.com/?tbm=pts
Comment too long. Click here to view the full text.
8 posts and 2 images omitted. Click Reply to view.
>>
Bombastus Werrywag - Tue, 07 Nov 2017 23:53:44 EST ID:od/nOgRU No.78901 Ignore Report Quick Reply
>>78900
I actually miss A Wizard too until Vehk chased him off and we got /420/ to ban the IP addresses until all his VPNs expired. Then when every post at him was hostile, he finally quit. He was only really bad on /med/.

Totally forgot /tesla/ was a thing. Same thing with /diy/. /chem/ i'm here because it's a containment thread revolving around Vehk, Press, and high kids from /weed/ that get spooped about quantum physics.

I wanna discuss opiate science but I'd much rather just do that in real life. Green Fox was helpful, too. But anyone without drugs as a tether eventually ends up leaving this god-forsaken place. Too bad I'll probably need opiates for the rest of my life (even if it's only a few times every month). Realistically, I could start posting good threads about opiate science and other drug science, but I'd much rather just talk to people IRL about that and who can give insight into my orgo questions and techniques.

In any case, you can call me son if you want. I used to go on the /dis/ or /weed/ much more and didn't decide posting on /chem/ until I tripped up. Not sure how long ago that was (and don't really want to know). Maybe a /tesla/ /chem/ merge would be helpful. All in all, it serves as a good backup board once tha futoor's /sci/ board goes down inevitably.
>>
Doris Bommlestone - Wed, 08 Nov 2017 01:04:04 EST ID:9c592zYY No.78902 Ignore Report Quick Reply
>>78901

Ohh, didn't know I was responding to the Bomb.

Yeah, I just miss the glory days. And it makes sense to talk to real people with an interest in drug chemistry because all you're going to get is shit posting here now.

I guess I just miss /chem/ because most science boards are pretentious. The attitude here was more relaxed and less douchey.
>>
Bombadoodle Wolframwag - Thu, 09 Nov 2017 21:42:53 EST ID:od/nOgRU No.78903 Ignore Report Quick Reply
>>78902
heh, yeah. the attitude here is nice since we're all on some sort of drug. also because memes.

also because you can literally just check this board once a month and be "up to date" with the /chem/. same thing with /other/ and /hooch/ and basically every board... nvm i kinda miss old /chem/, yeah.
>>
Clara Fimmerham - Sun, 12 Nov 2017 00:08:32 EST ID:+YUSEic8 No.78904 Ignore Report Quick Reply
>>78903
I do real /chem/ nigga
>>
Aureolus Werrywag - Sun, 17 Dec 2017 18:38:15 EST ID:RnmUOZ8A No.78949 Ignore Report Quick Reply
>>78904
uwu


Blood sttranded by Cyril Crennerbick - Sun, 05 Nov 2017 15:33:50 EST ID:Wd54ldDh No.78892 Ignore Report Reply Quick Reply
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What does blood get like really after large amounts of it leave the body and stay on the ground like in a war-field?
>>
Archie Crimmerstone - Sun, 05 Nov 2017 23:23:22 EST ID:H8Vs9M6y No.78893 Ignore Report Quick Reply
>>78892
It gets all dirty. eww.

On a serious note, I'd imagine it is eaten by bacteria/fungi/animals and returns to the carbon cycle. Blood just a mixture of organic chems, it returns to nature pretty naturally. Soil composition after would be high in nutrients found in the blood of those who died. An entire village of banana eaters slaughtered would have high potassium blood
>>
Bombastus Werrywag - Tue, 07 Nov 2017 00:26:01 EST ID:OZqbjhvG No.78895 Ignore Report Quick Reply
>>78892
explode a deer in the woods and see where the blood goes
>>
Phoebe Fanville - Thu, 23 Nov 2017 20:21:40 EST ID:xdtGflx/ No.78923 Ignore Report Quick Reply
>>78892
a middle ages era battle field is probably one of the best fertilizer sources nature could have hoped for
>>
Fucking Dartway - Sat, 25 Nov 2017 00:55:02 EST ID:MdBNaDoT No.78925 Ignore Report Quick Reply
>>78893

I would agree with this. Decomposition, denaturation, and bacterial/fungal consumption would render blood into basic chemicals. As mentioned, full of potassium salts along with sodium/chloride/iron/copper/etc salts. The proteins would be be broken down into various organic chemicals or utilized by the local flora. Any saccharides floating around in the blood would be consumed almost immediately; nature likes sugars.

This is just my own speculation.
>>
Angus Pickshit - Wed, 06 Dec 2017 20:51:45 EST ID:iiuer4oB No.78935 Ignore Report Quick Reply
you could probably by some at a nearby store
https://en.wikipedia.org/wiki/Blood_meal


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
>>78765
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
>>78765
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
>>78929
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


>>78890
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
>>78897
>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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lelbniz
>>
Bombastus !uYErosQbLM!!Mybq1UbK - Thu, 16 Nov 2017 04:07:15 EST ID:Fd7VfiYK No.78909 Ignore Report Quick Reply
>>78908
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
>>78885
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
File: 1479495429306.jpg -(49430B / 48.27KB, 398x389) Thumbnail displayed, click image for full size. 49430
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.
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Bombastus !uYErosQbLM!!Mybq1UbK - Sat, 10 Dec 2016 18:12:24 EST ID:01P1ms0Q No.78392 Ignore Report Quick Reply
>>78389
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
>>78389
>>78389
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
>>78843
y u necrobump
>>
Henry Cramblehall - Tue, 12 Sep 2017 18:55:54 EST ID:M7FrGPbw No.78846 Ignore Report Quick Reply
>>78845
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
>>78381
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.


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