The Periodic Table - 2016-05-02 (page 1 of 2)

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12:09 AM

@ringo Thanks, actually it just means I spend far too much time on here (avoiding real work...)

:D

@orthocresol I can relate...

LOL

3 hours later…

3:31 AM

@ringo @ortho And I'm impressed by the quality of both of your posts. Would not have pegged either of you as undergrads.

And, entirely unrelated: @pent, you might want to check out this repository of mine as well. (If you use Windows/Excel much for working up your computation results, anyways....)

@orthocresol YAY!!! I am not the only one.

5 hours later…

Martin - マーチン

8:40 AM

@Brian referring to our previous conversation about the DFT code questions, I reopened the newer one and purged all comments.

user116211

@mart o/

Martin - マーチン

:D

Hi!

user116211

8:54 AM

> the amount of time I spend in the chat room is directly proportional to the amount of work I'm trying to avoid doing.

user116211

said by John Rennie ;P

10:54 AM

When we burn ammonia, why don't we get nitrogen oxides?

Wikipedia says something to the effect that such oxides are unstable "with respect to N2 and O2" (whatever that may be).

@CowperKettle Means N2 + O2 is more stable than NOX.

@Jan Are you saying DMSO isn't healthy?

You clearly work for the industry.

!!daily

11

Q: Can an amide nitrogen be a hydrogen bond acceptor?

Can $\ce{N}$ (i.e. main chain $\ce{NH}$s of recognised residues in a peptide or protein) be a hydrogen bond acceptor? It is a well known fact that the main chain $\ce{NH}$s can be a hydrogen bond donor (as observed in the α-helix), but can they act as a hydrogen bond acceptor? If yes, help me wit...

carbonyl-compounds amines hydrogen-bond

11:42 AM

!!daily

!!weekly

!!nightly

@CowperKettle This command is only available for owners.

ah

i.e. Hippa, Lord Mart, and me

Also dammit @Jan, now I'm calling him Hippa because of you.

What was wrong with Hipp in the first place?! !!flip

(ﾉ*’ω’*)ﾉ彡┻━┻

user116211

@cowp @PhMgBr o/

11:46 AM

\o

Martin - マーチン

@Ina Stop wasting dollars... a good one ;)

(ﾉ＾◡＾)ﾉ︵ ┻━┻

BBL nap

@MAFIA36790 Good afternnoon!

Namaskaar, I mean. नमस्कार

user image

So NH3 works like an acid here?

It gives away 3 protons.

> From Sanskrit नमस्ते ‎(namaste), from नमस् ‎(námas, “bow, obeisance, reverential salutation”) and ते ‎(te, “to you”). नमस् ‎(namas) can be traced back to Proto-Indo-Iranian *namas ‎(“to bow”).

I seem to recall taht "namas" is "prayer" in the Muslim world.

> The other major term is the Persian word namāz (نماز), used by speakers of the Indo-Iranian languages (e.g., Kurdish, Urdu, Hindi), as well as Turkish, Russian, Chinese, Bosnian and Albanian.

Yes, indeed. Might this derive from the same root, "to bow"?

Interesting.

Yeah...we (Indians) bow when we say namaste

In Russian, the word "zdravstvuite" means "health to you", so we don't bow.

11:59 AM

wondering how this is pronounced

-2

Q: POS(plane of symmetry)

How do you do this fast imagination? Or is there some trick to it?

organic-chemistry homework

user116211

@orthocresol WTH is that?

@manshu Here are examples

@MAFIA36790 homework question... I just thought it was funny because POS could stand for something else less pleasant lol

(0:

user116211

12:00 PM

;)

Why are there the groups R and S?

R is the standard letter for marking radical groups.

There should be a topic named 'R and S naming' in your O chem book

R-S sequence rules

Exactly

Organic chemistry: R and S naming (1)

There are 22 videos of it in this series.

But the concept will be clear in first few of them

I'll read about it later

pentavalentcarbon

12:23 PM

@Brian Neat, thanks. But yes, I'm almost entirely Python-based.

12:46 PM

@PhMgBr Indeed. The formation of NO is actually endothermic

@PhMgBr Hipp is too hip for me ;)

2 hours later…

2:52 PM

> From the perspective of classical inorganic chemistry, which assigns formal oxidation states to each atom, pyrite is probably best described as Fe2+S22−.

O_o

But the S atoms have equal e-negativity.

Why minus 2?

OMG

@CowperKettle en.wikipedia.org/wiki/Disulfide

The sulfurs are bonded to one another

3:10 PM

@ringo Yes, but why should that lessen their oxidation states by 1?

Sorry, I was absent.

This is a covalent bond, with no .. how do you call it..

a nonpolar covalent bond

Why is sulfuric acid used as a dessicant? To remove water wapor? It does not react with water.

It reacts with any water to make H3O hydroxoniums.

So if we have a liter of sufluric acid and we pour 100 ml of water on it, we'll have 100 ml of pure hydroxium?

So, can one pour a glass of pure hydroxonium?

Mixing sulphuric acid and water is a very exothermic process, so a lot of water can be 'bound' (it's actually more like 'absorbed') by sulphuric acid.

@Jan does that water vapourize?

Individual hydroniums will be surrounded by molecules of sulfuric acid?

I was just reading about the industrial process to make sulfuric acid.

In one stage, there's a Drying Tower.

Water wapor-contaminated product is put through this tower.

The matter is, this tower uses concentrated sulfuric acid to remove the water wapor.

So I wondered how exactly does that work.

Sulfur oxide mixed with water wapor is put through the drying tower, and we get clean sulfur oxide.

So hydroniums apparently won't react with sulfur oxide (IV)

@manshu No, it devapourises ;)

3:25 PM

But where do the hydroniums go? THey float atop the concentrated sulfuric acid?

Maybe hyrdoniums themselves attract water molecules from the air?

@CowperKettle They vaporize as @Jan suggested by the wink emoticon

I think you're confusing yourself …

@manshu Is wink emoticon an IUPAC-approved symbol for indicating the direction of a chemical reaction?

Okay.. BBL (0:

@CowperKettle Yeah, it is taught in the 6th grade.

3:38 PM

@CowperKettle you don't know how to calculate oxidation states?

@CowperKettle it's precisely because it's nonpolar, so each sulfur has oxidation state -1

@CowperKettle it would have sulfate and bisulfate ions inside, if you have a glass os purely cationic species inside you would have some problems

@orthocresol Although I loved to speak of 'diluted oxonium ions' in undergrad lab courses when looking for 1 molar acid solutions.

@Jan not wrong, not wrong, you just have a lot of contaminants!

2

user116211

3:53 PM

!!greet/@L3ul

user116211

;_;

user116211

!!greet/@L3ul

Welcome to The Periodic Table @L3ul! Here are our chat guidelines and it's recommended that you read them. If you want to turn Mathjax on, follow the instructions in this answer. Happy chatting!

user116211

;))

4:13 PM

hey there, how come I get greeted? :))

!!greet/@L3ul

Because @Mafia is nice, despite being a @mafioso ;)

Welcome to The Periodic Table @L3ul! Here are our chat guidelines and it's recommended that you read them. If you want to turn Mathjax on, follow the instructions in this answer. Happy chatting!

That's how.

!!!gun

4:15 PM

(sorry for the awful joke like my other jokes)

!!flip/gun

(∿°○°)∿ƃnu

@pentavalentcarbon cclib, I guess?

It's fine, @manshu, you can always try a catalysis for our laughter (sorry)

user116211

@Jan Grazie :')

@L3ul The catalysts turns out to be a inhibitor sometimes.

4:20 PM

@manshu Catalytic inhibition?

someone who's into kinetics can help you find the right environment ;)

They're quite good when it comes to getting a reaction ASAP

@L3ul I am into everything apart from spectroscopy

@Jan Yup

so you're into quantitative analytical chemistry

check my question then, I'm really stuck there

4:40 PM

@L3ul Sorry..I hate ionic equillibrium

@manshu you liar! I believed in you :(

user116211

@L3ul hahaha....

@L3ul Told you about the inhibitor thing.

@MAFIA36790, are you, by any chance, an equilibrium type of fella?

user116211

I AM THE PHYSICS!

user116211

4:46 PM

;P

@MAFIA36790 what in physics?

user116211

@L3ul Seriously, you have to be patient.... there are brilliant minds here.... just wait.... you would get a satisfying answer at any point of time :)

user116211

@manshu EVERYTHING!

@MAFIA36790 Was that the Caps Lock of Magic or Caps Lock of yell.

user116211

@manshu ;P

user116211

4:49 PM

I'm not yelling.....

Of course not.

Sweeney Todd Song 10 Wait

@Jan How am I supposed to sleep tonight now...it's scary

@manshu If that was scary, better don't watch this:

"A Little Priest" - Sweeney Todd : The Demon Barber of Fleet Street (2007)

@orthocresol I know but not very well.

user116211

4:54 PM

I've been reading conservation and symmetry in Heisenberg picture... wanna join with me anyone ;P It's fun to read it at the dead night ;)) Especially if there is Feynman near you ;/

@MAFIA36790 Do you mean join you via Skype?

user116211

@CowperKettle The h bar

@MAFIA36790 What is "the h bar"?

user116211

;_;

It's same as the periodic table

and you are confused now.

user116211

4:56 PM

Thanks @manshu :))

Thanking someone with a sad emoticon? That's new.

I'm afraid I won't understand nothing in Heisenberg.. I need to learn how to calculate oxydation states at least

Only that the physics people have a table that's more like a bar.

3

@Jan It's funny rather than scary

@orthocresol Besides, if each S in FeS2 has the oxidation state -1, that would not endow them with the desired octet.

They will be one electron short of the octet, in short.

5:02 PM

@CowperKettle they do have an octet, because they form a covalent bond to each other.

@manshu Watch the entire thing, it's good ;)

@CowperKettle anyway google oxidation state, there should be plenty of stuff on how to calculate it, gotta go off now sorry

@orthocresol Thank you! I'll try to understand it. It's wonderful to have such help.

user116211

@CowperKettle just post your confusion.... we are here ;)

@CowperKettle wikipedia article is actually not bad

5:05 PM

I read about that in Chemguide, so I'll re-read, then visit Wiki. (0:

@MAFIA36790 I will inform the news agencies, so stay tuned. (0:

@Jan It's more like a husband and wife are fighting over silly things. unnecessary wink emoticon

Oooh, Mrs Lovett would love for Sweeney to see her as his wife but Sweeney does not see Mrs Lovett as his wife xD

It makes perfect sense. Sweeney looks like Johnny Depp. He deserves a wife which atleast know to comb her hair.

Oh, the irony ;)

No one messes with Capt. Jack Sparrow apart from @PhMgBr

user116211

5:10 PM

okay.... if you guys are done with that... listen to this melody ;)

user116211

Demonic Resurrection - The Unrelenting Surge Of Vengeance

Melodies are usually soothing...Not like Shaktimaan theme song.

user116211

No matter how many times I watch it, I always found it disturbing....

user116211

@manshu hahaha...

And there's even more irony to it

5:11 PM

Darude Sandstorm Reloaded

@Jan Who is he/she?

@manshu A spoiler ;)

Of what, may I ask?

Of Sweeney Todd ;)

There is no further question by my side then.

@MAFIA36790 Talking of melodies...

Yiruma - River Flows In You

It's my favorite melody/song.

@manshu How is @Mafioso's melody not soothing? \m/

5:16 PM

@Jan coz it sounded like a thirsty bear.

user116211

EKLA CHALO RE original

user116211

Tagore's melody.

sung by Tagore himself?

This voice is better than Amitabh's

@manshu But your's sounds kinda repetitive o.o Which is okay if you imagine it being a river, but … nah.

Allow me to add my favourite melody ;p

Melodies Of Life - (English) - Final Fantasy IX

@Jan I like repetitive songs. But I'd have to look up non-repetitive in my playlist

@Jan That's nice

What game is it?

5:28 PM

It only says in the title ;) (Final Fantasy IX, also known as best game ever.)

What about the counter strike

> Final Fantasy IX, also known as best game ever.

Don't force me to quote myself too much ;p

54 secs ago, by manshu

What about the counter strike

same here.

ooh, we're talking about games here
guys, there's no reason to compare games if Half-Life exists

@L3ul But what about Counter Strike?

5:31 PM

2 mins ago, by Jan

> Final Fantasy IX, also known as best game ever.

2 mins ago, by manshu

54 secs ago, by manshu

What about the counter strike

well, Counter-strike deserves some attention - being a mod for HL

but I got tired of it

Votes are:

counter Strike - 1
Final Fantasy IX - 0

well, you should also put a point for FF-IX

@manshu Good. Reminded me of Keiko Matsui

5:33 PM

I'll counter your counterstrike with a counter attack!

I want to start the franchise after I'm done with the Olympiad, sooo

@Jan, with which game should I start?

I heard it's quite a dispute about which is the best to start with

@Jan But the Counter Terrorist will win in that case.

@L3ul Not so sure, I haven't actually played many FF games myself and didn't watch speedruns of the entire series … I mean, I could always say FFIX, because it's the best and it's the one I started with, or FFI because history … But actually, it may be best to not play IX until you've played the others to fully acknowledge the references ;)

Beethoven: String Quart Op.18-4 1/3 Amadeus (12.1969)

My favorite classic composition

@CowperKettle It starts beautifully

Gioachino Rossini - William Tell Overture

You people might have heard it.

5:55 PM

@manshu Many times! But I never knew its name. My knowlegde of classics is patchy, as is of chemistry.

Beautiful composition.

@CowperKettle It was in the Looney toons show.

@manshu It was everywhere, I believe!

Martha Argerich play Chopin "Polonaise N°6 l'heroique"

@CowperKettle True. Now it's in my life

(The whole 1965 "Legendary" record by Martha Argerich is beautiful, the whole album. This is only a small part)

@CowperKettle Not sure if her composition is more beautiful or herself.

6:17 PM

Yes @Mart I know. Maybe I should've quoted "number of moles" since I was too lazy to explain what's the difference.

@Jan !!flip/@Jan's mind

(╯°ਊ°)╯︵@ɾɐu⅋#Ɛ6؛s ɯᴉup

!!flip/!!flip/!!flip

◟(`ﮧ´ ◟ )¡¡ɟꞁᴉd/¡¡ɟꞁᴉd

6:46 PM

What is it today with users?

@PhMgBr In what sense?

That dollar-waster guy, and now this dude who's flooding the site with "WTH is Delta G" in different forms.

-1

Q: Gibbs Free Energy and Composition

What is the difference between the above graphs regarding Gibbs Free Energy? Why one is concave up and one concave down? Do they represent different things?

physical-chemistry thermodynamics reaction free-energy

-1

Q: Reaction Gibbs Free Energy

Consider a reaction, A→B If we are given $ΔG$ for this reaction, what does that mean? If no reaction reaches equilibrium then why do we define Reaction Gibbs Energy?

physical-chemistry thermodynamics reaction free-energy

0

Q: Gibbs Free Energy Diagrams

Please clear my following doubts regarding Gibbs Energy. Can someone explain the difference between the above two diagrams regarding Gibbs Free Energy? Also if Change in Gibbs Free Energy is defined by the slope of Gibbs Energy plotted against composition, so during the course of reaction i...

physical-chemistry thermodynamics equilibrium kinetics free-energy

Maybe he want to grab this concept.

0

Q: An answer a full hour after the question was closed?

There was a question closed today for being too homeworky. Closing happened ‘1 hour ago’ as of now. Right a few seconds ago, an answer to said question was posted (labelled with ‘1 minute ago’ right now, but that changes faster). $$\huge \text{What happened here?}$$

bug answers closed-questions

DUPLICATE

BUZZZ BUZZZ

6:51 PM

@Ina I beseech thy almighty knowledge.

user116211

bye folks! good night to all o/

Bye @Mafioso o/

What happened here is that you posted a duplicate. Rimshot — PhMgBr 10 secs ago

:P Overflow

user116211

@Jan addio ;)

Oh boy, he got me !!deathbygun

6:55 PM

Adds comment, then upvotes so @Jan doesn't feel like deleting it

Please VTC your own question so I can review some @Jan.

I'm waiting for you to flag/dupeclose so that I can see what that feels like ;)

Well good luck with that. Sits tight

*sits tighter*

*can't type today*

*needs to get shot*

!!gun

】ﾟДﾟ)┳—-ﾟ~:;’:;ω*:;’;—-

Uses @Jan to produce O2

6:57 PM

@Chemobot That's not a !!gun, that's a mahou shoujo's wand at best! D=

……┳┓o(▼▼ｷ)

@Chemobot Okay, that's a water pistol.

Yay! I love @Jan's nitpick mode.

Tries to figure out how he triggered it for later use

user image

@PhMgBr Hint: You didn't ;)

Or, more likely, you didn't ;)

7:00 PM

0

A: Name this amine

The Short Answer The name you list does correspond to the first compound shown under the naming scheme you were given for the second compound, however last I checked the IUPAC scheme recommends "N,N-dimethyl-2-propanamine" not "N,N-dimethylamine-2-propane" if you want to be really strict about i...

Hmm, I really don't feel like reading it.

@Mart won.

(Spoilsport D=)

Feeds meta.chemistry.se

1

Q: An answer a full hour after the question was closed?

There was a question closed today for being too homeworky. Closing happened ‘1 hour ago’ as of now. Right a few seconds ago, an answer to said question was posted (labelled with ‘1 minute ago’ right now, but that changes faster). What happened here?

bug status-bydesign answers closed-questions

Dammit @Mart; Y U NO LET US REVIEW

@PhMgBr reads more like a rant about systematic nomenclature

@Feedsmeta.chemistry.se You're slow, question was already closed xD

In my defense, that was still during my break when @Mart posted that, so I didn't know about the dupe O:-)

7:05 PM

@User well, the only thing you needed to do was edit your question to demonstrate your effort. That's just what the policy says. If other questions haven't shown effort, they should be closed as well. Also just noticed that no one commented on your question telling you about the policies before closure; apologies for that. — PhMgBr 7 secs ago

I feel like @Mart right now.

Dunno why.

Don't ask why.

@Loong Burn with extreme prejudice?

Though we have limited firepower as they have a shield named accept.

@PhMgBr Why? wye? Y? ouaie? whie?

Whey?

Whoy?

Not whey. Or whoy. But whiye.

Whahahai

That's Indian. ^

Nande? Miksi? Warum? Pourquoi ? varför?

7:09 PM

Somebody help, @Jan's settings are broken. Again

=D *wants to star both lines as a single message*

Sorry, but blame @PhMgBr for not flagging. As for the MathJax: No. — Martin - マーチン ♦ 53 secs ago

Mart no like MathJax? .__.

@Jan Ja, I saw him edit out my Mathjax as well. !!flip

(/-o-)/ ⌒ ┤

Mart is turning into a dictator. Slowly but steadily.

OK, Mart's minions are crushing the door. It was nice knowing you all

Goodbye @phMg, it was nice knowing you. Don't tell the Martator’s minions where to find me o/

7:13 PM

Mart Mart I swear it was Jan who betrayed you! Let me live

It's because it's more focused on the process than the solution @User. You wouldn't ask a question if you knew the answer, and there are fuzzy lines about how much effort is enough effort, but something like this would've avoided closure much faster: "I think since this is a secondary amine and there's a t-Bu bonded to nitrogen $\ldots$" Still, if you edit and include what's in your mind, the question will be put in a queue for reviewing, and if enough people agree, get reopened again. Write about the procedure, whether it's right or wrong, but do write. — PhMgBr 2 mins ago

user image

Still, I'm a bit upset that the OP wasn't guided.

@PhMgBr I … wish I had a PhD =C

@Jan You do have a PhD. In demonic chemistry

Also in how-to-nag-about-low-yield-and-get-low-yields-everyday chemistry.

2

7:32 PM

@PhMgBr Somehow I feel like a nagging housewife now …

@Jan That's because of the futile ellipsis

I thought futility was a property of resistors only.

@Jan Think again.

No really, thinking is good.

For health.

I think I need to cut down on my time at Stack Exchange.
And I can't believe that I needed to say that *again.*

I tried to send a message back, but I accidentally hit 'reply all' and now the ocean is clogged with message bottles.

@orthocresol I'm pretty sure it's correct. Is that a challenge? :P

7:41 PM

@PhMgBr I'm on @orthopresent's side. And off. See y'all way too soon o/

\o

Also !!flip/Orthopresent's side

◟(`ﮧ´ ◟ )oɹʇɥodɹǝsǝuʇ⅋#Ɛ6؛s sᴉpǝ

Common people, I eat two meals of ELL everyday.

The usage is correct.

@Loong Reading it, I think it's not rantish. I've seen teachers teach nomenclature this way.

9

Q: More acidic - protonated carbonyl or protonated hydroxyl?

Consider two acetic acid derivatives, one with a protonated carbonyl oxygen and one with a protonated hydroxyl oxygen. An argument for the one with the protonated hydroxyl oxygen being more acidic is as follows: This structure has a lone pair on its protonated hydroxyl oxygen and the oxygen is...

organic-chemistry acid-base

I never knew one could protonate the hydroxyl group.

@CowperKettle George Olah can protonate everything.

7

7:54 PM

George Andrew Olah

George Andrew Olah (born Oláh György; May 22, 1927) is a Hungarian and American chemist. His research involves the generation and reactivity of carbocations via superacids. For this research, Olah was awarded a Nobel Prize in Chemistry in 1994. He has also been awarded the Priestley Medal, the highest honor granted by the American Chemical Society and F.A. Cotton Medal for Excellence in Chemical Research of the American Chemical Society in 1996. == Education and early life == Olah was born in Budapest, Hungary, on May 22, 1927, to Magda (Krasznai) and Julius Oláh, a lawyer. After the high school...

@CowperKettle You can protonate everything with the power of will.

@CowperKettle Yay! I sometimes mistake you for Chemobot.

@Cowp think of it like this: In chemistry almost everything happens to some extent because molecules, ions etc. collide. Whether it happens to a considerable extent so that we'd start caring about it in our macroscopic world is important.

In pure water you have a strong base (OH-) and a fairly strong acid (H3O+ etc.) but do we worry about them when drinking it?

@PhMgBr “If you will it, Dude, it is no dream”

Who is @Dude?

user image

Noice

8:01 PM

It's a quotation from Hertzl

en.wikiquote.org/wiki/Theodor_Herzl

In "The Big Lebowski", a great movie.

I gotta sleep. \o all

Good-night, Muhammad!

Grotthuss mechanism

The Grotthuss mechanism is the process by which an 'excess' proton or proton defect diffuses through the hydrogen bond network of water molecules or other hydrogen-bonded liquids through the formation and concomitant cleavage of covalent bonds involving neighboring molecules. In his 1806 publication “Theory of decomposition of liquids by electrical currents”, Theodor Grotthuss proposed a theory of water conductivity. Grotthuss envisioned the electrolytic reaction as a sort of ‘bucket line’ where each oxygen atom simultaneously passes and receives a single hydrogen atom. It was an astonishing theory...

It turns out protons are hopping this way.

I was reading about Olah and somehow wound at that page.

> In liquid water the solvation of the excess proton is idealized by two forms: the H9O4+ (Eigen cation) or H5O2+ (Zundel cation).

So it's not hydronium only.

8:46 PM

@PhMgBr Why don't you post it over at ELL and see what they say haha

9:18 PM

@Jan YES, final fantasy pieces are great! I play those on the piano :D

Hey

Hello @Mith :D

@orthocresol Didn't play FF but I heard it's popular

9:42 PM

@Mithoron actually, I will admit, I have never played it before. I just like the pieces ><

@orthocresol Haha :D

Well I didn't even heard soundtrack so you still beat me ;)

Any other RPG then?

@orthocresol (づ｡◕‿‿◕｡)づ

@Mithoron does pokemon count hahaha

@orthocresol Pokémon's an RPG ;)

@orthocresol Even if it somehow does don't tell me ;)

9:51 PM

Also, I somehow feel the urge to come and visit you, bring Final Fantasy IX with me, and play that while you accompany me on the piano *,...,*

@Jan Hmm, maybe I can make a recording one of these days

that reboiled water question sure rocketed in popularity..

Did it make it to HNQ?

Yep it did

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