The Periodic Table

Anybody know a set of good exercises for proton NMR? CC @Jan. I'm thinking of spectroscopic data of some compounds so I would identify the heck out of them

orthocresol

@M.A.R. Do you have access to textbooks?

amazon.com/Introduction-Spectroscopy-Donald-L-Pavia/dp/…

It has very good exercises. (Any of the older editions is fine too)

DSVA

3:52 PM

hi everyone!

gannex

Hi!

Fawad

4:08 PM

M.A.R.

@DSVA \o

2 hours later…

Jan

5:52 PM

@M.A.R. All I could reasonably do is present you PDFs of some nice compounds to identify along with the sum formula … ^^'

M.A.R.

Slaps Jan

Jan

Ouch .___.

*hides in the cuddly, fluffy, pink corner*

M.A.R.

6:06 PM

Reminder: We have a Be Nice rule, that is enforced. — Oddthinking ♦ Feb 8 at 16:36

Anyone else wonder what comments were deleted making a mod to type such a thing?

user123733

Can somebody help me in this

According to me it should be 6:1 as (36:216) , but the answer given as 3:1

How ?

CowperKettle

Does methane burn in water?

Jan

@M.A.R. Na, it’s DonTrumpSays.SE; considering how fiery the emotions can turn when it comes to politics, I’m rather happy that I don’t have to see the deleted comments ;)

M.A.R.

@CowperKettle An enthalpy change of plus 216 kJ/mol says otherwise

@user123733 Did you balance the equations?

@Jan That just sounds like you DO want that

user123733

@M.A.R. oh I got my mistake

Thank you

M.A.R.

6:20 PM

Yay

Loong

6:38 PM

@MaxW how can i find out if they are the same ? i was told that if two isomers are different they will have different names so now that this rule is no longer useful , how can i know whether or not two isomers are different from each other ? — Sam19KY 2 mins ago

This became harder than expected.

M.A.R.

Oh shoot

it************** — Sam19KY 34 mins ago

Hehe

When did our site turn to SO?

I feel like talking to cave men.

Loong hoola hola hola holloola

M.A.R.

6:58 PM

lareviewofbooks.org/article/normalization-lesson-munich-post

Man, these posts are awesome.

I especially like this part:

> Cut to the current election. We had heard allegations that Trump kept Hitler’s speeches by his bedside, but somehow we normalized that. We didn’t take him seriously because of all the outrageous, clownish acts and gaffes we thought would cause him to drop out of the race. Except these gaffes were designed to distract. This was his secret strategy, the essence of his success — you can’t take a stand against Trump because you don’t know where Trump is standing. You can’t find him guilty of evil, you can’t find him at all. And the tactics worked. Trump was not taken seriously, which allowed …

DSVA

7:12 PM

I love it if people ask questions and after they get an answer they are all sassy about it...

M.A.R.

@DSVA Examples?

Loong

@DSVA That happens when they drink too much butanol.

M.A.R.

Ahh, DSVA is from somewhere called Ostrich

DSVA

-1

Q: Why n-Butanol is not used as a safer alternative to ethanol in the alcoholic beverages?

The $LD_{50}$ of n-Butanol adjusted for its intoxicating potency is about 1.5 times that of ethanol. This would mean to me that n-Butanol is therefore 50% safer than ethanol. Why is it not used to replace ethanol in the alcoholic drinks?

@Loong yeah I guess so^^

M.A.R.

@DSVA Where is Ostrich located?

And what do you think of my Romanization?

DSVA

7:18 PM

where does it say Ostrich?:-D

@M.A.R.

M.A.R.

@DSVA Your profile does

DSVA

Oh, for me it says "Wien, Österreich" which is Vienna, Austria

M.A.R.

Ah well, close enough

DSVA

I guess it translates to Ostrich in some languages?

M.A.R.

Nice, I learned a potentially Austrian word.

Which is a word for . . . ''Austria''

DSVA

7:20 PM

well, german-stuff is a tag here so nothing wrong with german words here I guess:-D

M.A.R.

Are there great differences between what would constitute Austrian and German?

Jan

Rainhard Fendrich - I am from Austria

►

DSVA

@M.A.R. similar to british and US english I guess

Jan

Contrary to what Einstein may say, God throws a die. — Jan 12 secs ago

M.A.R.

Ugh, so what's Bavarian then? Martian English?

@Jan Throwing dies is dangerous

DSVA

7:23 PM

oh that's it own special thing:-D

Jan

Haindling Bayern des samma mia!

►

M.A.R.

@Jan Also, is this a badass analog to ''because Chemistry''?

Re-ping

Jan

@M.A.R. It is, but in a more physical way.

M.A.R.

Yuck, physical

Loong

Hm, blackcurrant contains butanol. We could try that.

1 hour later…

orthocresol

8:44 PM

@gannex ^ Hmmmm...

Jan

@orthocresol Right when I was editing that post to include MathJax D=

orthocresol

Yeah...

DSVA

@orthocresol smbc-comics.com/comics/1451919584-20160104.png

Jan

9:00 PM

I’ma badassy day today

The terminal $\ce{B-H}$ bond is 15.7 terminal arbitrary units strong, the bridge-$\ce{B-H}$ is 3.14 arbitrary bridging units strong. (Hint: there is no commonly accepted definition of ‘bond strength’.) — Jan 13 secs ago

-4

Q: Examples of chemical change or chemical reaction that is accompanied by gained or lost of energy.

Chemistry homework. Need answers. Thank you.

homework

Wow …

This question is about a 1.2 on the Mohs scale; not actually hard. — Jan 13 secs ago

2 hours later…

gannex

11:32 PM

@orthocresol You didn't know about those transition mentals?

question for the chat: does anyone know how exactly OCl- oxidizes the TEMPO radical?

as in this mechanism:
http://www.sigmaaldrich.com/content/dam/sigma-aldrich/articles/Chemistry/tempo-catalyzed-oxidations/tempo-mediated-oxidation-of-alcohols.jpg

Jan

No one is asking how this is supposed to be done. You seem to be engaged in stalking now. Please leave, I do not want or need anything from you. — aiag 39 secs ago

Laugh of the day :D:D:D

gannex

@Jan thanks for editing my answer there. Very nice. I guess I was being lazy.

Jan

@gannex Which one of the many I edited today? ^^'

gannex

@jan it was my answer about ligand exchange mechanisms. You typed a whole bunch of equations

Jan

Oh that one ^^

gannex

11:46 PM

I was being lazy and using photos of a textbook