I seek help.

@Zizouz212 ?

Someone needs to reinstate a liking for chemistry in me

i.e. My chemistry exam is tomorrow, and I don't feel like studying

@Zizouz212 you have two choices: drugs or explosives

Can I make my school explode?

@Zizouz212 what's the topic of the exam?

Chemistry...

Grade 11 chem :)

Not very interesting is it?

@Zizouz212 does that include organic chemistry? or just titrations and redox reactions?

@Loong Umm... I don't know :(

I think molecular structures, and stoichmetry?

Ah, don't worry about it :)

As it is, that class is (dare I say), a bit of a joke

:-(

Sorry, I think I just have a really bad teacher :/

They can kill the desire to learn about Chem :(

I'm trying to think about what will be on it... Molecular structures, and the rest solutions and gas stochiometry (did I spell that right?)

Stoichometry?

More like "Stoichiometry"

Almost there :)

Huh. A pair of atoms can be considered an harmonic oscillator for IR purposes. Is that approximation any useful when dealing with 3c2e bonds and all those?

@Ϻ.Λ.Ʀ. I see. Some harmless...pinging? Does that have a name?

randomly returns

I could make an entropy or a quantum pun, but I'm terrible at choices

Maybe you should measure the system? It will collapse the wave function into one of those two choices.

But SE is a macroscopic system.

Unless you measure the electrical currents that make everything up

Or if you're using a quantum computer.

Is there any non-research purpose a QC could realistically be used?

I'm reasonably certain that they're eventually going to make it to the commercial market.

Do they need helium cooling?

shrugs I don't pretend to be an expert on it. My expertise is in computational biochemistry so.

My local NMR person has been having this no-helium-for-child-parties campaign for a few years, so I'm a bit scared.

Well

I'd propose they use hydrogen instead.

For child parties.

Well

But

Hidenburg.

OR, use CO2 or whatever and make that gas really hot

That would need a heat resistant polymer, and that's not a terrible idea

Yes, but children+fire

I don't think child parties deserve much more brainpower

@Kurzd Ping-attacking. :P

@Zizouz212 I seek help too.

@Jan No. Yeah. No.

@Mithoron I want to flag serial weddings for moderator attention.

Hey @Break; welcome back

@pentavalentcarbon I might do that, but I have to get a closer look at this first. I don't feel comfortable giving an answer about software, that I have not used. If you yourself do the work to familiarise yourself with the program, I can only encourage you to write up an answer. I am sure a lot of people, including the author, would appreciate that.

Hey all!

Hey @Ϻ.Λ.Ʀ.

@Mart hello!

hi :D

@Jan this is looked down upon and some people get really angry about this... FYI

@TanMath can you elaborate

@Mart how did @Jan react to the pings?

@Martin-マーチン rep-begging is bad..

According to some people...

@TanMath he took it jokingly... I guess it's a frequent game you can play with @Ϻ.Λ.Ʀ.

@TanMath ahh I see, I understand... as long as it's not for everything the users post I think it's fine... we had more serious cases

with that being said, please upvote everything I do mwahaha ;)

People make a big deal about asking for even a single upvote kindly... ¯_(ツ)_/¯

@Martin-マーチン me too...

good thing we are not all the same...

??

@TanMath \o

@Martin-マーチン *she, dammit

I don't care if people promote one post they did, and others probably feel the same

@TanMath Not where I live

as long as it is within reason

Hi Ina!

Hullo @Mart-the-nice-mod

@Martin-マーチン His name is Muhammad if you want to call him something :P

I wonder if I should ask a nomenclature question... or if I just should ask @Loong in chat...

@Ϻ.Λ.Ʀ. that did not ping ;)

@Ϻ.Λ.Ʀ. he keeps making that mistake!

@Martin-マーチン If you want others to benefit, ask on Chem.

@Martin-マーチン I don't need to ping you when I know you're here.

@TanMath I think I established Ina as a nick for @Ϻ.Λ.Ʀ.....

@Martin-マーチン NO. ಠ_ಠ

after all I am not the only one using it ;)

He doesn't like being called ina!

BTW @Mart the message I pinned got the chat ad to the ads.

Haha, I can ask great question with the title... IUPAC nomenclature confusion... and tag it iupac

@Ϻ.Λ.Ʀ. very much appreciated...

anyone has noticed the new ads in the rotation?

I only see old ones

@Martin-マーチン I'm getting ready for an edit summary joke.

@Ϻ.Λ.Ʀ. Are you okay to change the slogan to Haikus are awesome/ Chemistry's even better/ So pull up a chair. to fit the 5-7-5

@Martin-マーチン Yeah, I just retired from all this Japanese stuff.

Ohhh no someone is @Breaking into the room: o/

okay... gonna do it now

Lol

room topic changed to The Periodic Table: Haikus are awesome / Chemistry's even better / So pull up a chair [blowing-the-lab-up] [german-stuff] [hullo] [love-you-all] [martin] [table-flipping] [tre] [welcome]

Yay!

Pin that!

For the sake of pinning!

lol

Hah

changing the ad now

You guys actually laugh at my jokes, huh?

The guys at PPCG laugh at only really funny things..

To be blunt and MARish, I have laughed at a few jokes in SE.

Though really funny things are really common there...

On chat, I tend to smile or chuckle, but laugh, well, no.

I mean laugh as in writing lol or ROFL

Nobody actually laughs!

Dam tends to write "LOL" in another chatroom.

Is he the astronaut guy??

@TanMath That's not hard to find out.

@TanMath Yeah

@TanMath chat.stackexchange.com/…

@Ϻ.Λ.Ʀ. so you actually don't write many "lol"'s?

LOL

I write one message and you finish another that answers my question!

@Zizouz if you want to gain interest in studying stoichiometry, see its power in real life.

Go read something about how awesome it is.

@Ϻ.Λ.Ʀ. stoixhometry is boring

@TanMath sometimes.

It can be very interesting if you solve different problems about it.

Which I can not say for any other part of chem.

True...

@Ϻ.Λ.Ʀ. I have a question about h-bonding...why can't a hydrogen and an oxygen on separate molecules NOT bonded to an oxygen or hydrogen H-bond?

@TanMath You mean why OH's don't hydrogen-bond?

@TanMath I don't get what you are asking...

But they do.

btw i asked the question, now I hope senpai (@Loong) will notice me

Let us take dimethyl ether as an example

@Loong please notice him.

There is an oxygen in the middle

;)

@TanMath yes

And hydrogens around the carbons..

@TanMath There would be hydrogen bonding, but it would be so elognated and so weak, people won't count it as such.

Why don't the hydrogens around the carbons h bond with the oxygen in another molecule?

they do

@Ϻ.Λ.Ʀ. stop answering my questions before I ask them!!

but is far weaker than in another case

@Martin-マーチン so @Ϻ.Λ.Ʀ. is right?

Why is it far weaker?

@TanMath H bonding should be strong by definition. If it's weak, don't call it hydrogen bonding.

the CH bond is not polarised enough

Mhm

@Ϻ.Λ.Ʀ. i disagree...

@Martin-マーチン oh! So the dipole moment isn't as strong! Obviously!

@Martin-マーチン Well, weak hydrogen bonding is stronger than a weak intermolecular bonding. O_O

^

It's just a matter of terminology, no real science going on.

For instance, I call the bond between @Mart and Japan a hydrogen bond.

^^

the h-bond is mainly an ionic interaction with some covalent character

Yeah, I remember Ron's comment.

@Ϻ.Λ.Ʀ. nah, were pretty much covalently bound

@Martin-マーチン Is it that strong?

the stronger the polarisation of the involved species, the stronger the attractive force.

Yes

probably the strongest hydrogen bond you can find in [F-H-F]-

it's about half covalent and half ionic

Mayhaps

it's so strong it is borderline to call it a hydrogen bond

wohooo I see my question in the feeds <3

Eh, let's call it [F-H-F]-.

@Mart I like pictures in a separate paragraph.

@Ϻ.Λ.Ʀ. Are they not separate enough?

@Martin-マーチン The spacing annoys me.

@Ϻ.Λ.Ʀ. meh.

@Martin-マーチン MEH?! (ノಠ益ಠ)ノ彡┻━┻

┬─┬ ノ( ^_^ノ)

(ノಠ益ಠ)ノ彡┻━┻

What is going on?

Why the Table flipping?

@TanMath There should never be any reasons for table flipping.

Table flipping is the reason for table flipping.

@Ϻ.Λ.Ʀ. circular reasoning, huh? I love it! :P

GTGTB - got to go to bed

Good night and bye!

I hate acronyms more than 5 chars/

And have a good rest of a day for those who live in places where it is currently daytime! (Like @Ϻ.Λ.Ʀ. and @Mart)

Bye!

@BreakingBioinformatics o/

@Martin-マーチン You missed rule P-14.4 (c):

> When several structural features appear in cyclic and acyclic compounds, low locants are assigned to them in the following decreasing order of seniority:

> (…)

> (c) principal characteristic groups and free valences (suffixes);

> (…)

And “-3-one” is lower than “-4-one”.

Hello @IUPAC :)

@Mithoron hi

I wonder why Zn reacts with HCl. Is it because there is a larger electronegativity difference between Cl anr Zn than between Cl and H, and so Cl is attracted to Zn.

@CopperKettle I love your curiosity. :)

So I don't provide an answer to your question, only a hint:

electrochemistry, E°

@Ϻ.Λ.Ʀ. Thank you!

@Martin-マーチン Yes, I agree. The package is small enough that I can read it and understand it, but it's also small enough that I might rewrite the whole thing...it's very ugly and un-Pythonic.

Any crude oil geeks around here?

Just a question:

Is the bottom of a fractionating crude oil tower flat or curved?

Most of the pictures available on Google/Shutterstock do not show the bottom of the tower.

How could I find out?

@Leuchte Lemme take a look; also, welcome to the Table!

Thank you :)

I remember my textbook picture showed a curved bottom and top tho'.

I think the diagrams are oversimplified

e.g.

vs:

Well, sure.

But since almost all of them show it curved, there might be something else to this.

What about?:

It's rather difficult to tell

The top is certainly curved though

Well, let's think about what advantages a curved bottom might bring about.

It could mean better flow.

No left over oil.

But could easily topple over :)

The same way you don't see perfectly flat tanker thingies.

So you're suggesting a flat bottom with curved corners?

@Leuchte To a degree, some flatness may not cause a problem.

And dammit, I don't know of any fractional distillation experts in this chat.

It's all about applying forces.

Should I post the question on SE?

@Leuchte But which SE?

the Chemistry one

There's also Engineering SE

(But I'm not sure whether that would fit)

Not chem, since, well, imagine we see "do fractional distillation thingies get curved or flat butts?". What would be our first face expression?

@Leuchte Maybe physics.

Ask on their meta first.

And formulate your question so it fits.

Or maybe find a schematic from BP

If I were you, I'd ask something like "what would be the advantage of a curved butt as opposed to a flat butt?"

:) hehe

And they would go on presenting convincing-looking dynamic explanations.

You could also ask on their chat if such question should be on-topic.

(I wonder why this reaction happens; also due to reduction potential?)

@CopperKettle I hate it when they use equal signs instead of arrows.

I've reached the "bases" page in the textbook. (0:

@Ϻ.Λ.Ʀ. It's an introduction level texbook, for 8-graders.

@CopperKettle You can give a thousand reasons for why something happens, especially, especially if that's a reaction.

nods

This formula is an example of how to obtain an un-solvable base.

WIth solvable bases, it's simple, just throw the metal into the water.

Oh.

Arrhenius base? (/¯◡ ‿ ◡)/¯ ~ ┻━┻

@Ϻ.Λ.Ʀ. Could be. (0:

I know his name. (0:

hydrocarbons-technology.com/projects/marsdenpointrefinery/…

hydrocarbons-technology.com/projects/marsdenpointrefinery/…

Coming back to you; just a moment

All of them have flat bases

I think I can conclude that they do have flat bases

BTW @Leu I wonder why the bases interest you.

So @Copper; some info before you continue studying bases and stuff.

@Ϻ.Λ.Ʀ. I'm trying to draw a good crude oil refinery diagram in Illustrator

This division – acids and bases – was only created because we wanted to take a step further to understand reactions @Cop.

Do you have any recommendations based on the other diagrams?

@Leuchte Rounded corners.

Something between flat and curved.

And red–yellow gradient.

Hmm, lemme think.

What purpose do you make the diagram for?

I'm writing self-published GCSE textbooks as a student

AIWS @Cop: So acids and bases, like everything else in chemistry (hell, isn't chemistry about naming stuff in nature?) is totally just nomenclature.

Hmm. But there's a difference. Acids give away H+, bases give away negatively charged things.

People provided different theories and models for what would an acid or a base look like.

AH! FOUND IT

@Cop look at the different theories his answer explains.

People use them when they need 'em; but generally, the most useful theories are that of Bronsted–Lowry and Lewis.

@Ϻ.Λ.Ʀ. Thank you! I see there's a bunch of theories in the Wiki page also, I just thought them too complex to read just yet.

As usual, textbooks deviate from the real world of science, and hence you see most of them sticking to the Arrhenius theory of acids and bases.

nods

Heck, his theory only works in aqueous mediums and he wasn't even trying to propose an acid–base theory.

Anyway

@Leu what I hate most about diagrams in books is the amount of text used in them.

As in too little or too much?

And why so?

Too much.

You prolly know this better than me, but the reader shouldn't get stuck in reading/understanding the diagram too much.

Good night, Muhammad!

Thanks for your advice :)

Night!

But my guess is that Na is more active than Cu, and that's why Na from NaOH snatches Cl from CuCl2 (0:

@Leuchte Well, do you prefer the yellow to mean hotter, or red?

I don't quite understand

@CopperKettle Yep. First group metals are vigorous.

@Leuchte Imagine you want to show something is hot. Would you be more likely to choose yellow, or red, to represent heat?

@Ϻ.Λ.Ʀ. Preferably red

But with the right kind of gradient of course

Oh wait

Actually uses blue versus red, and it looks nice.

So my point being, try to include nice scientific facts in the [subtle] details of your diagram @Leu.

That was my main intention :)

It's designed to bring fact and diagram together

If people see they can find out something interesting about your diagram, like some scientific point illustrated in the content, they'd like the diagram, no matter how crappy it looks. :)

@Leuchte Then what are you doing here chatting? Get the work done! :)

Ok Ok!! :)

Bye bye

See you when it's done

See you around

@Ϻ.Λ.Ʀ. you going to bed or something?

@TanMath Nah not yet.

Don't ping me, I went to sleep.

reverse psychology . . .

lol

Evening all

xD

Hi all.

Hello everyone

Would any of you know how I could find a crude oil expert as I'm unsure as I have various questions about the process?

Should I try LinkedIn?

@Leuchte Wouldn't be easier to read about it on the net?

@Mithoron Unfortunately I can't find much relevant information and most of it is quite far too complex to understand (i.e. at an industrial level)

is a biochemist