/sci/ - Science & Math

how do i find a cozy analysis lab at some factory as a bachelor of s.?

>>14812378
I have an online chem test in 5 hours. Wish me luck.

>>14812390
Indeed, LinkedIn etc. They're a dime a dozen

>>14812437
What type

bump

>>14812378
>Just make sure you memorize everything. Don't bother trying to understand the concepts, that's a waste of time and meant for actual chemistry students who'll need it later on. It's a lot easier if you just brute force your way through it and memorize all the mechanisms.
Lol rote memorization is the lowest form of comprehension on Blooms Taxonomy. Please don't do this and then become a doctor.

>>14814396
>Lol rote memorization
unfortunately some of the courses are just too condensed and move too fast to do anything else for a large majority of students.

>>14812378
What do I need to know for more "entrepreneurial" pursuits, shall we say?

>>14814402
a lot combined with much hard work since that area is extremely competitive (see drug synthesis, for instance).

>>14812378
Tfw taking adv org with Anslyn right now

chembros what is really a chemical reaction? like wtf is happening at the quantum mechanical level when two molecules "bump" into eachother? are these electron pushing diagrams a representation of reality or they're just a convenient way to count up electrons?

How do I get into energetic chemistry as someone with a heavy engineering education and limited chem experience? I want to be like Tom from Ex&F

>>14814402
HAHAHAHA HE REPEATED THE MEME FROM THE TV SHOW HAHAHAHA WHAT A CARD!!!
HOW DID HE EVEN THINK THAT ONE UP OMGLOLOLOLOLOL

Hey frens, new to the general. I'm taking an archaeological sciences course, and I was wondering if you'd know of some good study resources for things such as stable isotope analysis, and for radiometric dating. If any of you have taken such a course your advice is appreciated.

>>14814403
How can that be true when rednecks do it (poorly) with a sub high school education?

>>14815219
start learning to make drugs. the knowledge you will pick up is translatable to all of chemistry. it'll teach you how to make bombs, drugs, poisons, useful things, whatever you want (almost)
t. learned organic chem through clandestine chemistry (you can't beat the resources available)

>>14816848
idgaf about making chemicals, i just want to understand how quantum mechanics translates to chemistry
i want to understand why certain compounds absorb certain wavelengths of light but not others (and to be able to predict the absorbance of a compound only from its molecular structure)
i want to understand why chiral compounds have the strange ability to rotate plane polarized light (and to be able to predict how much and in what direction a compound can rotate polarized light)
i want to understad how bonds form and break and to be able to predict bond energies theoretically

bump

>>14812378
Transition metals are the devil's work and you cannot convince me otherwise.

chemlet here. using dry ice, clear contractor bag, and string as a low-tech means of air displacement, what's a reasonable expectation for % oxygen concentration inside the bag? assume the bag is:
>tied most of the way shut with string by a constrictor knot
>semi suspended to taper the top so it vents at the highest point
>able to be sealed with a minimum of disturbance by tightening the knot fully
>going to be sealed just before the last of the dry ice sublimates
O2 BTFO is the goal. <0.5% is the ideal. expecting attainment of so low a figure by so imprecise a method seems unrealistic. if it is, how much higher would a realistic figure be?

>>14812378
>>HOW DO I LEARN CHEMISTRY?
Nobody ever asked this.

>>14815219
>>14817304
>chembros what is really a chemical reaction?
...
...
You think we know? Shit just happens down there. Call it the coupling of the wavefunctions of two given molecules, if you want.

>are these electron pushing diagrams a representation of reality
No, not in the slightest.

From what you have said, it sounds like you may be interested in physical chemistry/quantum chemistry/computational chemistry. However, that is not a good place to start, necessarily. You should at least know gen chem.

>>14814402
Stop masturbating and get started on OP's book list

>>14814072
>currently working on a few plans for speeding up saddle-point searches to find transition states
this. that. what is this called? what do i need to search for to understand saddle point thermodynamics for transition state thingies?

>>14820683
Dude, just read the first part of Anslyn's Physical Organic Chemistry

Even if you only took general chem you should be able to understand it, it's really well written

>>14819796
Embrace organometallic chemistry brother. Modern chemistry is nothing without a metal. For me, it's organocuprates

>>14819814
What are you trying to do?

>memorize random shit
>a "better" chemist is just someone that memorized more shit
>your technical knowledge is something anybody can do, even though you wear it as a badge of distinction
And you wonder why chemists are always getting mogged by chad physicists.

>>14812378
May I please get help? It's about measuring the amount of ascorbic acid in 1 gram of cabbage using DCIP titration.

Below is the question and below is my attempt:

Question: In this experiment 50 grams of cabbage were ground in 50ml of 5% metaphosphoric acid solution for a final volume of 70 ml. A 10 ml sample of this extract was then titrated with DCIP.

Trial 1: Initial Burette Reading: 23.1ml

Trial 1: Final burette reading: 23.4 ml

Trial 2: Initial Burette Reading: 25.6 ml

Trial 2: Final Burette Reading: 26.1 ml

(I standardized earlier and got 1 ml of DCIP will take up 4mg of ascorbic acid).

Here is my work/Attempt:
(Correct answer is 0.4mg of ascorbic acid)

Ok. So 1 ml of DCIP absorbs 4mg of ascorbic acid. Since a 10ml sample of the 70ml volume from 50g of cabbage requires 0.4ml to titrate, then that must mean to titrate all 50 grams, we need 0.4ml x 7 = 2.8ml of DCIP. (recall that we used a 10 ml sample from the entire 70ml solution from combining ground up cabbage with the 50ml of 5% metaphosphoric acid). Since we need 2.8 ml of DCIP to titrate the 50 grams of cabbage, and we know 1ml of DCIP = 4mg of ascorbic acid, then that means theres 2.8 x 4 = 11.2 grams of ascorbic acid in 50g of cabbage. 11.2grams ÷ 50 grams = 0.224mg of ascorbic acid in 1 gram of cabbage.

What did I miss?

>>14820998
preventative pest control measure. there's a thankfully small but still non-zero chance that clothing moths have been given an opportunity to set up shop and they're difficult to eradicate if they gain a foothold. heat kills all life stages but certain susceptible items, most notably the vacuum, can't survive (nor fit in) the oven. museums use anoxic environments to treat stuff by means of nitrogen, argon, CO2, or oxygen scavengers in a controlled setup. the quick and dirty solution recommended to homeowners is dry ice. the more oxygen still in there, the longer it takes. temp and humidity also factor in but not without some idea of what % makes sense to use as a starting point for estimating the rest.

>>14822343
dilute your titrant

>>14812378
What book can you recommend me as a Shit tier /beg/? I doze off to my high school chemistry and now I don't know shit even the basics. I just need a book to help me get on track.

>>14822615
jerk off to uncle fester until you have a more specific question to ask

>>14822615
wtf. Just read the op

*Gives his friend schizophrenia*

>>14824915
context?

>>14821047
It's hard work, just like any field.

>>14812378
>even the reading list looks like a chaotic, unstructured mess with no pedagogical progression, with no rhyme or reason
yep, this is a chemistry thread

>>14826117
Cope, you will never be as pure and fundamental as a physicist.

>>14812378
How far can you get in the study of chemistry without doing any physical lab work?
>>14825187
that's hamilton morris, a drugtard who fed his friend some RC psychedelic and fucked his head up

>>14827129
you can larp as a genius on par with woodward, corey etc. for years and never have to confront the fact that you're too retarded to run a homologation

>>14826975
Sorry Chud: mathematicians >>> physicists > chemists

Phosphoros and sort

>>14829714
physicists and chemists work in cool labs and do fancy stuff
math nerd just writes shit on a paper or stares at a computer screen all day
lame

>>14820998
>organocuprates
My man!

>>14819796

>>14829740
Oh, so you're an experimentalist. My apologies. Must suck being too much of a brainlet to get into theory.

>>14826975
NOOOOOOOO
now excuse me but I have some bathtub phenetylamines to try out