The Periodic Table

Have a star for that one :D

Thanks pal :D

I like the second version of that joke, too.

So three logicians walk into a bar. The bartender says "Do all of you want a beer?" The first one says "No."

indeed

5:22 AM

Hi! @inɒzɘmɒЯ.A.M

OK.

Anonymous

6:12 AM

@Martin-マーチン @Jan anyone there?

Anonymous

Can someone tell what does the term 0.01 g formula weight of NaCN mean ?

Anonymous

Is it same as 0.01 mole of NaCN ?

I don't really know... i am too long out of the experimental business

7:00 AM

Hi@inɒzɘmɒЯ.A.M

@Berne Hey!

I am studying linguistics for the test.

@SanchayanDutta I thought it meant 0.01 g of NaCN.

@Berne I'm writing Mr.Munesyar's homework.

;)

Oh, no, too boring.

@San it's a rea~lly bad way of putting things, because it mixes moles and weight. I would refuse that description and ask for one in grams, moles or equivalents.

7:08 AM

@Jan So what does it mean?

I'm not sure.

"0.01 g formula weight of NaCN" = "I'm not sure."? O.o

"Formula weight" should just mean the mass of the compound.

Should isn't reliable.

We need more context.

Anonymous

7:19 AM

Ok I got it now...it just means 0.01 g mole of NaCN :-P...language can sometimes be such a hurdle :-P

Anonymous

Thanks to all of you anyway :-)

physicsforums.com/threads/units-question-g-mol.61512

7:39 AM

@inɒzɘmɒЯ.A.M Do you have a printer?

@Berne Yes

did you see that paper in mehdi's hands?

What paper?

mehromah

7:57 AM

@inɒzɘmɒЯ.A.M What was the font munesyar was talking about.

@Berne Comic Sans MS. And what's more, it's a terrible font no expert in typesetting would use. But anyways.

not bad

@SanchayanDutta So problem: What the heck is a gram mole? ;)

8:22 AM

the quantity of a chemical compound equal to its molecular weight in grams; now usually replaced by the mole. Also called gram molecule.

:D

@Rigor Oh, I'm familiar with the deprecated gram molecule.

Anonymous

8:56 AM

Hehe basically 1 g mole=1g molecule =1 mole while n g formula weight is n times the weight of 1 formula of that in substance grams !

Anonymous

However for 1g equivalent weight is 1 mole multiplied by now factor :-P

Anonymous

Can't believe I spent 2 hrs searching the meaning of these terms :-P ...hope it's resolved now!

10:15 AM

Such stupid terms, as I said ;)

Anonymous

10:30 AM

Really stupid :-P @Jan but I am happy that I could complete ionic equilibrium only after I learnt those terms :-P hehe :-D

Anonymous

*n factor (typo above)

11:22 AM

Hi!

How is everyone.

Oh sorta fine-ish, I believe @getafix o/ Hi

o/

I am looking for some texbook recommendations..

Our pchem class, we are using atkins' physical chemistry..

Textbook recommendations? No clue, sorry .__.''

But sometimes i feel that the mathematics/derivations, are a little bit insufficient, or atleast seem that way to me. Could someone suggest some supplemental reading.

Oh no problem, Jan.

12:19 PM

@getafix What subject are you doing? Thermo or quantum or something else?

thermo.

for now

i see

i know what you mean, I (and a lot of people I know) found Atkins horrible he just states things and skips 75% of the steps

so I used Levine's phy chem

amazon.com/Physical-Chemistry-Ira-Levine/dp/0072538627

I know right. and our professor, isn't a great help either. He asks to work through the math ourselves if we are interested.

can't comment on other popular textbooks, never really tried them :p

No problem mate. thanks. I already bought a copy of atkins for the course. will check this out from the library, and give it a go

12:26 PM

Must say though, once you are familiar with the concepts and stuff, atkins is a great reference.

True. I have a feeling it would be great to come back to for like a review

but not so great if you are seeing all of this for the first time

Lots of people feel the same way so don't worry. All the best :)

Thank you. @orthocresol

suᴉʞʇɐ ┻━┻ ︵ヽ(`Д´)ﾉ︵ ┻━┻ suᴉʞʇɐ

Poor Atkins .__.

12:32 PM

@Jan Given how much the bloody book costs, far from it...

hahaha, jk jk

I approve, it's a pun =3

user161117

1:06 PM

yeo ppls

@StevenGrigsby o/

user161117

\0\

|o/

user161117

o^

user161117

broke arm

1:08 PM

o

double amputee ):

user161117

you typing with your nose or toes?

my hands

user161117

either way I'm impressed

user161117

oh

only my arms were removed. i kept my hands..

user161117

1:09 PM

ohhhhh

user161117

nubbin'

@StevenGrigsby Really?

user161117

hey

user161117

Yeah

You're right. I've also heard Cymatics are delicious. — inɒzɘmɒЯ.A.M 18 secs ago

1:10 PM

I admit my latest comment was very unprofessional, but are you really trying to unnerve me?

user161117

look I mean it's a simple mistake and I clarified in my comment and ph13 backed me up

user161117

it's an unfortunate thing since I can tell you put work into it bu

user161117

like don't go this route of "well you should have called it zig-zag"

@Martin-マーチン ?

user161117

I appreciated it but like I don't need someone to tell me what I should have done eh? It's done, it's past, so yeah I am trying to unnerve you lol

1:13 PM

@StevenGrigsby, @inɒzɘmɒЯ.A.M 0/

22 secs ago, by inɒzɘmɒЯ.A.M

@Martin-マーチン ?

Well then don't go about and call an honest mistake as being funny

@getafix \o

user161117

lol damn it I came here to talk about chemistry now it's getting all dramatic

What is the drama about?

1:14 PM

cen.acs.org/nobels.html

user161117

Look I said this, "This is a good answer, but unfortunately I wasn't really interested in sp hybridized linear, I meant it in the "straight chain alkane" linear sense where the oxygen and sulfur are likely sp3 hybridized. – Kainui 12 hours ago "

Here, lemme unnerve @Mart:

just stumbled across this graphic

Chill out people

I am going to have a weekend now.

1:14 PM

Dear @Mart,
Your sausages suck.
Sincerely, MA

user161117

that's about it haha

:-)

user161117

I still enjoyed it

@Martin-マーチン Still didn't tell me what's going on. ಠ_ಠ

Hi pal @StevenGrigsby

1:15 PM

WHY ARE YOU PEOPLE AGAINST LINKS?

@inɒzɘmɒЯ.A.M Sorry

@Martin-マーチン So, what's wrong?

@Wildcat o/

I don't want to talk about it. At least not until I calmed down...

@Ghost o/

1:16 PM

so have fun with the retagging

Hi everyone!

and see you in a couple of days

@Martin-マーチン Flip a table. That'll calm you down.

@Wildcat \o

@getafix \o

@Martin-マーチン Cya!

Ghost

1:17 PM

hi all!

\o to everyone, I can't do it one by one.

Yeah flipping a table always works.

@Steve you could have replied to my comment, you know ;)

user161117

Haha I was away

Enjoy your weekend @Mart ! o/

1:17 PM

@Jan ?

@inɒzɘmɒЯ.A.M just go looking for a question of Steve's ;)

user161117

Besides, I don't think answering you Jan would have helped

Why are people suddenly so vague here?

user161117

since you were asking about trigonal pyramidal which wouldn't have clarified it oh well

@inɒzɘmɒЯ.A.M Why are people here? :O

1:19 PM

@Wildcat Because of TRE.

@inɒzɘmɒЯ.A.M nope, because of Friday.

@Wildcat Yeah, that was the rationale for the time of the schedule.

I wonder if @Bon will make it.

Let's get this party started

:D

@Steve I think it would, because it also touches the two definitions of linear. One being 'a chain of molecules all connected to one preceding and one following' and the other being 'in a straight line'. The opposite of the first one would be pyramidal in SOCl2's case, the opposite of the second one 'bent'.

user161117

maybe, but I didn't interpret it that way so I wouldn't have answered it that way

user161117

1:26 PM

happens, I guess I didn't imagine someone would place oxygen in a linear structure oh well

user161117

like ethers aren't sp hybridized

user161117

it's colloquial to call them 'straight-chain alkanes' I mean hey whatever it's just a simple misunderstanding not the end of the world here lol

Haha, yeah, but I was planning on answering given your information; but first I was planning on checking my notes from molecular chemistry 2 from the winter term 2011/12 ;)

user161117

Yeah I have sorta had this question in the back of my mind, although not very important to me, it's just it stands out cause when I was taking Ochem 1 several years ago the teacher asked me to come to the board and draw the lewis structure

user161117

and I drew that, and like it checks out naively so he was kinda like

user161117

1:31 PM

idk weirded out haha

@inɒzɘmɒЯ.A.M I almost forgot! Luckily I am doing maths work on my computer right now and I saw your ping :D

@inɒzɘmɒЯ.A.M

@bon Yay!

@Berne Hey!

@inɒzɘmɒЯ.A.M When does it actually start?

HI pals :D

1:42 PM

@bon In approximately 109 minutes.

Ok. I'll be there

hi all

@inɒzɘmɒЯ.A.M Sounds good-ish. Maybe I'll help out, too =3

@Jan (づ｡◕‿‿◕｡)づ

@ToddMinehardt \o

hey @inɒzɘmɒЯ.A.M @Jan @bon

1:53 PM

I wonder if @Wild kitty will help too.

And @Todd

@inɒzɘmɒЯ.A.M in re: pingability from (La)TeX room, is there something i need to do/set in order to be reachable from there?

@inɒzɘmɒЯ.A.M only if I will be done with DFT :(

hi @Wildcat

@ToddMinehardt Just being in the room for the last 7 days.

@inɒzɘmɒЯ.A.M help with what?

1:54 PM

Hi @Todd!

Q: The Great Retagging Event - Episode 1: The one-taggers

9

I'm about to set the first event to start this Friday. If you're inconvenient with the time, let me know. I might change the time, or even the day of the start. The event has been $\color{red}{set}$; to 15:30 UTC and will last for 90 minutes. See you there! $\color{green}{\text{May this be a f...

i can do some retagging and will hang out in the latex room, sure

So guys, poll: Should we make a separate TRE room or do it in the periodic table? CC @Todd @Jan @Bon @Wild @Skill @Steve

i see we're at 13:55 UTC - so in a little bit, yes?

@ToddMinehardt Yes.

1:56 PM

k

Imo keep it here where it is originally scheduled for @inɒzɘmɒЯ.A.M

Aha.

yes, keep it here

btw

how do we now that we do not work on the same tag simultaneously?

^

Good question

@Wildcat Will be revealed in thirty mins.

i.e. after I'm done with my answer.

Not that it's some black magic.

2:05 PM

Everyone take a different tag?

That seems like the easiest option

No.

-1

Q: H2O become H2O2

When water falls from long distance like "water falls" , fall water become H2O2 Hydrogen peroxide, When we churn water in mount I think due to churning H2O become H2O2 because test of water in the mouth we feel like H2O2 pls explain

everyday-chemistry

What?????

$\Large{\mathcal{WHAT?????}}$

New answer!

@inɒzɘmɒЯ.A.M @i dunno,

A: Why don't polar and non-polar compounds dissolve each other?

0

TL;DR It's because the enthalpy changes of a solution generally don't favor dissolution. A longer version: To explain this, usually the enthalpy change explanation is given. For the sake of understandability, let's see what happens when two compounds dissolve. Take ethanol dissolving in water ...

What a messy answer.

@Wild @Bon @Skill I wrote my answer above. ^ And now I will inform you about how things will be done in the form of an answer to my TRE meta post.

2:18 PM

@inɒzɘmɒЯ.A.M Hey don't go around writing factually incorrect stuff. That's pseudoscience you know. Just like... cymatics

@orthocresol What's pseudoscience?

I mean, what did I write that was pseudoscience?

Your assertion that delta H < 0.

Eh?

Haha it's just a typo, I edited it. Sorry to rain on your parade, it is a very nice answer.

@orthocresol I might be a bit distracted; please reply . . . oh!

Oh boy, that was . . . whoops.

Thanks anyways @Ortho!

2:21 PM

By the way, if I edit tags, will it give you all a bunch of stuff to review?

Yes.

I don't mind reviewing edits.

Oh dear, I'll help next time round then. Let me collect more of that sweet reputation...

@orthocresol You only are 122 edits away from getting the edit privilege.

It'd be faster if you just upvoted 23 of my answers :)

Oh, BTW, hullo @user1942348! Welcome to the Table!

@orthocresol :o But those damn serial-upvoting mechanisms . . .

2:25 PM

Give me edit reviews! I need that reviewer badge

I need that steward badge.

Haha I blame myself because 75% of the time I'm too lazy to type out a proper answer so I just post a short comment.

@inɒzɘmɒЯ.A.M You've got a long way to go yet

@bon Not in CVs and First Posts.

@bon @inɒzɘmɒЯ.A.M well if you guys want to review edits then I'm happy to join in later

2:27 PM

@orthocresol We'd love you to join in!

@ortho Reviewing edits is pretty fast and I only need 36 more to get my badge

@bon You can't get it today then. >:)

2:38 PM

Are we starting?

An hour left.

If you're wondering, I'm writing the TRE tips answer.

Oh wait yeah. Daylight saving time means that its 15.30 here already :D

2:54 PM

Wow, I have four enlightened badges and five nice answer badges on chem. Consequence: Only one of my > 9 answers was not first and accepted. Now I feel proud =3

LOL

TRE tips and how-to

3

@Bon @Jan @Ortho @Skill @Whoever wants to participate ^

I wonder if there's someone called @Whoever :D

Lemme find out.

@bon We have @WhoElse, but not Whoever.

@inɒzɘmɒЯ.A.M I don't think homework needs removing (in most cases), it just needs other tags as well.

3:09 PM

@bon Could be. I still remember some mistags.

Q: Can jet fuel melt steel beams?

Classic conspiracy :)

0

So because of the many conspiracy theories relating to 9/11 I was asking myself if jet fuel can melt steel beams and I need your help. Is it possible that it can melt steel beams under certain circumstances?

energy

@inɒzɘmɒЯ.A.M, so, we are here sitting and waiting for some queries from you? Right?

Is everyone ready?

not sure about everyone, but the Cat is ready. :D

^ @Bon @Jan @Ortho

3:23 PM

(/¯◡ ‿ ◡)/¯ ~ ┻━┻

GIMME QUERIES! :D

Oh haha.

An event is starting in 6 minutes... :P

Hullo @Art!

Q: How quickly will steel lose structural strength from a heat flash?

@bon I thought I saw that question before somewhere =O

Almost ready =D

Loong

3:24 PM

@Jan :

1

I want to know if a sustained jet fuel burn around steel has the ability to make the steel structurally unsound. It seems like any applied heat that effects steel will be a kind of "heat flash": a sudden, and possibly quite short-lived, burst of heat. In this situation, we assume steel has a melt...

heat metallurgy fuel

Here's the query: data.stackexchange.com/chemistry/query/368033/… The first tag is homework guyses.

yeah,

but

I've seen that

:(

Then let's get starting.

WAIT!

@Wildcat How many retags are yours?

3:26 PM

They have captcha there!

And a button

Yes, not if you log in with SE.

I'm a Human Being!

Oh hullo @Wytha!

But I'm not a human being! XD

@Wildcat No you're not. Liar.

Not liar.

3:27 PM

(/¯◡ ‿ ◡)/¯ ~ ┻━┻ ALRIGHT!

Hello.

Guys gimme your number.

Gimme 20 for starters.

(Tag was homework, right?)

@Jan Your first question: chemistry.stackexchange.com/questions/24329

@Jan Yes.

@Jan Your last question: chemistry.stackexchange.com/questions/16008

Next one, please.

@inɒzɘmɒЯ.A.M, meow!

3:29 PM

First one needs physical-chemistry.

20 seems like a good number.

A: The Great Retagging Event - Episode 1: The one-taggers

Guys you need to tell me how many retags you wanna do.

3

TRE notes and tips Don't edit closed questions! (This is covered with my query, but just in case) The rationale, if you ask, is an SE slogan saying "$\color{red}{\mathcal{don't~polish~turds}}$". Enough said I guess. Don't edit questions that you voted to close/flagged for closure. For the same ...

Let's start with 20 for everyone.

And see how it goes.

OK.

@Wildcat Your first question: chemistry.stackexchange.com/questions/5541

@Wildcat Your last question: chemistry.stackexchange.com/questions/26929

@inɒzɘmɒЯ.A.M - i'll do 20 Homeworks

3:31 PM

@inɒzɘmɒЯ.A.M 20 for me plz

hit me

@inɒzɘmɒЯ.A.M, yes, sir! :D

@ToddMinehardt Your first question: chemistry.stackexchange.com/questions/35431

I can also do some retags, but I can't edit without supervision.

ok @inɒzɘmɒЯ.A.M - thanks

3:32 PM

@ToddMinehardt Your last question: chemistry.stackexchange.com/questions/37774

@inɒzɘmɒЯ.A.M k

I've read through the tags though

@wythagoras Gimme all those edit reviews :D

Ok. Please also give me 20 questions then!

@bon Do the rest, starting from chemistry.stackexchange.com/questions/15706

3:35 PM

Uh loads of calculations to format :(

Q: Ortho-effect in substituted aromatic acids and bases

@wythagoras You need to start with organochem tag.

@bon That's why you only have 7 to retag for now.

@wythagoras The second cleanup tag is organic-chemistry. Search for it.

The first 20 results are yours.

@wythagoras Your first question:

18

When comparing o,m,p-toluidine, basicities, ortho effect is stated as a reason why o-toluidine is weaker But, When comparing o,m,p-toluic ccid basicities, ortho effect is stated as a reason why o-toluic acid is stronger acid. Further, I was given the definition that ortho effect is an effect...

Q: Hydrocarbons with only 4 carbon atoms

@wythagoras Your last question:

6

How many different organic structures (from the pure theoretical viewpoint) can be drawed with only 4 (exact) carbon atoms and with/without hydrogen? Polycyclic compounds and bridged compounds are also allowed. Please, name them all as well! :) Remark: I have drawed the chemical graphs in a piec...

Cracks knuckles It's my turn.

@inɒzɘmɒЯ.A.M ┬──┬╯︵ /(.□. \）

You go first. I'll go after you

Q: Why are there different chemical structures for epinephrine (adrenaline)?

@orthocresol Oh sorry, I think I forgot you.

@orthocresol Your first question:

6

The Wikipedia structure is: Note the empty bond at far-right. "Journals on the Web" (w/e that is) has: CH3 added at far-right. And rxlist.com shows: There's an extra H going into the page! Is one of these incorrect, or are they all consistent but w/ some implied bonds or something? Ma...

Q: Why is glycine hydrochloride more acidic than chloroacetic acid?

@orthocresol Your last question:

5

I cannot figure out why glycine hydrochloride is more acidic than chloroacetic acid. Could I have figured this out from a pKa table and maybe am just not seeing it? On the table I have in my book (Organic Chemistry, Seyhan Ege, 3rd ed) , neither acid nor its conjugate base are there. Thanks!

@inɒzɘmɒЯ.A.M - what's my second question? i'm lost on how to go from my first to the second etc.

@ToddMinehardt If you run the query, it's sorted by score.

3:41 PM

@inɒzɘmɒЯ.A.M - did that, looks like @Wildcat grabbed the second one for me :)

Collect your edit reviews quickly guys

just making sure - ran the Homework query

Naughty cat!

@ToddMinehardt Well, the score 1 and two score zeros are yours.

got it @inɒzɘmɒЯ.A.M

@inɒzɘmɒЯ.A.M, what's wrong? :O

3:43 PM

My turn.

Well that was a long edit for one questio

Q: why does hydroquinone have non zero dipole moment?

@bon (づ｡◕‿‿◕｡)づ

My first question:

5

Why does hydroquinone possess non zero dipole moment? The $\ce{OH}$ groups present at para positions on the benzene ring should cancel the effect of each other....if there is a plane change then exactly in which cases molecules do change planes?

My last question:

BTW guys watch out for bad titles. CC @Bon @Wild @Todd @Jan @Wytha @Ortho

What should I tag questions which are purely 'How do I do this calculation'? and don't come under any existing tag. E.g http://chemistry.stackexchange.com/questions/15706/density-of-an-object
I want to create a density tag for that really

@bon maybe physical-chemistry for some?

@bon Bad title, watch out.

3:51 PM

@bon, don't care too much.

@Bon creating tags without a meta post is messy.

This is just another hw question nobody needs except OP.

:D

@inɒzɘmɒЯ.A.M Exactly

Guys if you remember to discuss some meta, or want to know how to tag a specific question, use chat.

Kartik

Can anyone suggest where can I learn how to predict the products of reactions?

Here in our school once some teachers came for a demo coaching class and tey said it takes about 5 to 6 days to learn it

3:54 PM

@Kartik I close that question as 'too broad'. :P Seriously, that's the very reason for why people learn reaction-mechanism.

@bon, there is also elemental-analysis

but it haz no wiki!

XD

@Wildcat The purpose of this event is to clean up junk-ish tags like those.

If we ever need them later, we'll make them again.

i created a physical-properties tag for the density thing @Wildcat

@Wildcat I just noticed that it is new. I vote for deletion because it comes under analytical-chemistry

@Wildcat I actually created that one but iddn't create a wiki yet.

Okay, I'll re-edit and delete in that case xD

3:55 PM

@inɒzɘmɒЯ.A.M, there are few qs which will fall into this!

Kartik

@inɒzɘmɒЯ.A.M Earlier I also thought its too broad but the teachers from Bansal classes say that they can teach it in 5 to 6 days. Now that is very specific

@Jan, no wait.

Is acid-base really only for acid base reactions?

@Jan, chemistry.stackexchange.com/questions/17178/…

What do you think?

Or can it also include other questions about bases and acids?