The Periodic Table

orthocresol

12:13 AM

@pentavalentcarbon are you drawing people here from reddit :D

getafix

12:43 AM

@pentavalentcarbon will do haha :)

@Jan sweet mother of Feuerzangenbowle...that thing looks so good! :O

@AaronAbraham are you studying to become a doctor/pharmacist or something? or do you simply have some mental health issues? lol

orthocresol

@getafix I tried consuming a glass of wine last night... didn't feel good at all... conclusion: alcohol isn't my thing

getafix

@orthocresol that's basically fuel/sustenance for me..

orthocresol

I'm sticking to tea/juice/water... Or coffee if I ever learn to drink it

:D

getafix

tea..how very english of you!

Well i can't stomach coffee either

plus it ruins my sleep..

i am so sensitive to it..

orthocresol

My parents drink so much coffee that it actually puts them to sleep instead of keeping them awake

getafix

12:47 AM

LOL haha

actually to be honest, in my experience most people don't fancy the taste of alcohol when they first try it

orthocresol

Yeah but I know some people who just can't sleep if they drink tea/coffee at any time past 5pm heh

getafix

I know I didn't..

yeah I am one of those people, lol

which is good cause a little coffee goes a long way when I need to pull an all nighter or something

orthocresol

I didn't. I'm okay-ish with the taste now, but just in small, tiny quantities, please...

Oh... I just use chocolate for that...

Hahah

-1

Q: HOW TO SOLVE THIS Question Help Please!

What is the fraction, as a percentage of the total probability of finding, between points at 50 pm and 75 pm, an electron n=6 level of a one-dimensional box 150 pm long?

wavefunction

jonsca beat me to a closehammer??? Unacceptable.

getafix

lol

I feel like leaving a flippant comment..

but I shall resist

orthocresol

I used to do that sometimes when I was just a normal user.

Now (especially on main site) I have to be really careful

getafix

12:50 AM

yeah lol..

with great power

orthocresol

Comes great cliches.

getafix

indeed

I am so swamped with assignments right now..

sigh..

orthocresol

Been there, done that :P

Get off SE and go do your work!

getafix

I have been doing that since 6 this morning, been three hours..sigh

orthocresol

Set yourself some target and tell yourself "I'll go back on SE when I'm done with xxx"

I do that with YouTube videos

getafix

12:53 AM

yup that's what I usually do too

orthocresol

(it never works, but that's another matter altogether)

getafix

for instance just popped in here cause I was eating breakfast lol..

and decided to read what penta had sent me

orthocresol

and then you don't leave

getafix

yeah lol..

for the life of me, I can't find any references for this

9

Q: What is the role of NaHSO3 in syn diol formation from alkenes with OsO4?

All I have found on this is that NaHSO3 reduces partially the osmate ester, so breaks off Os and leaves a syn diol. Is it possible to show this step with arrows showing the process of electron movement? I suppose this step is not the main part of the reaction, and mayn't be very important, but I ...

organic-chemistry reaction-mechanism

Okay breakfast/lunch done..I am off now!

catch you later, o-cresol

orthocresol

@getafix I found a review on the reaction, pubs.acs.org/doi/pdf/10.1021/cr60324a003 but it doesn't mention the mechanism either

Ok, cya

All the best with your work :)

user228700

2:10 AM

Hi everyone :-)

user228700

I've a quick question. Let ${p^o}_A$ and ${p^o}_B$ be the saturated vapour pressures if two liquids A and B which are completelyimmiscible with each other. Let $n_A$ and $n_B$ be the mole fraction of the liquids A and B respectively, in the vapour phase.

user228700

How is it that we have this equation:

user228700

${p^o}_A/{p^o}_B = n_A/n_B$ ?

user228700

Dalton's Law of partial pressures!

user228700

Nvm :-)

koolman

2:49 AM

How to find oxidation number of Br in HgBr2.HgO

And I am a boy f

And I am a INDIAN boy.

user228700

3:05 AM

@Martin-マーチン:

user228700

0

Q: Henry's Law for gas-water mixture

I came across the following (solved) problem in my textbook: Henry's Law constant for $O_2$ dissolved in water is $4.34 \times 10^4$ atm at $25°$ Celsius. If the partial pressure of oxygen in air is $0.4$ atm, calculate the concentration (in terms of Molarity, $M$) of dissolved oxygen in wate...

homework physical-chemistry solubility

user228700

4:00 AM

@Seal: Thanks for ur answer! :-)

user228700

I've a quick question. In the hydrogen emission spectrum, what type of radiation does the Humphrey series emit? Is it infrared?

user228700

5:26 AM

Aiya! Look:

user228700

web.chem.ucla.edu/~harding/tutorials/resonance/…

user228700

(^ Preference rule for resonance structures)

user228700

5:48 AM

@DHMO: Can u please help me to figure s'thing out, related to resonance again?

user228700

Also, hello :-)

DHMO

hi

@Kaumudi ?

user228700

::Drawing::

user228700

user228700

My question is...

user228700

5:54 AM

Don't murder me but I think I figured it out meself :-|

DHMO

@Kaumudi murders Kaumudi

user228700

I'm sorry! >.<

user228700

Still, thanks for being my rubber duck :-P

DHMO

lol

user228700

Did u notice, BTW, that I found those rules? ^^^

DHMO

5:59 AM

@Kaumudi yes

user228700

Apparently, it's not always that we need to check to see which molecule satisfies the highest number of rules. A complete octet outweighs all the other rules, even when they might actually be violating other rules!

DHMO

for example?

user228700

Question d in that document ^

DHMO

I see

user228700

6:13 AM

> "FONClBrISCHP is a very useful word in helping you remember the order of the electronegativities of the nonmetals."

user228700

Damn, it'll be hard to memorize that!

user228700

Or even come up with a mnemonic :-|

gannex

7:05 AM

It recently occured to me that chemistry might be the most time-consuming major. I don't think it's necessarily the hardest, especially at my school. We're kinda weak on calculus and pchem. But with the amount of lab-writing I do compared to anyone else I know, I really think it's the most time consuming

DHMO

@gannex the grass is always greener

gannex

anyone agree? Is there any degree that requires a higher time investment than chem?

yeah, I know. I'm just thinking about the lab reports. Physicists and biologists write 'em too, but we have them for almost every single class.

I'm wondering if other schools' lab report policies are as bad as tough as mine actually. I regularly write 20-30 page + lab reports, with 3 due per week.

usually about 12 hours a report

Aaron Abraham

11:36 AM

@Kaumudi FON-Cl Br CSI PH ---- Phone-call Bro! CSI is on! Please Hold. That's what we Med. guys use ;)

C,S,I have 'bout the same E.N values, and so do P 'n H

orthocresol

@gannex I think that's just you guys. That's very, very long. I wrote 30 pages for an 8-week full-time research attachment. ordinarily, I would argue that biologists or medics have it worse, in terms of the volume of stuff they learn.

@Kaumudi So if you look up the values on Wikipedia, you'll find that they fall into the wavelength range of 1-10 μm, give or take a bit.

Wikipedia says infrared runs from 700 nm to 1,000,000 nm, so the Humphreys series comfortably falls inside there.

user228700

@AaronAbraham Nice! :-D

user228700

@orthocresol Yes, I asked JR and he also said the same, thanks :-)

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