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3:43 AM
0
Q: American vs British spelling: Is there a standard? Should there be?

BrianThe only mention of this that turned up in a quick search was a passing mention three years ago. I've just encountered a pending edit on this question where the editor tidied up the question with MathJax and such, but also proposed to change favored to favoured. My habit when I make edits is t...

 
 
1 hour later…
4:59 AM
@Mithoron Hehe at first look it looks like spam.;)
 
5:36 AM
@inɒzɘmɒЯ.A.M ლ(ಠ_ಠლ)
@inɒzɘmɒЯ.A.M ლ(ಠ益ಠლ)
 
6:11 AM
@Martin-マーチン You're lucky I'm not on my laptop.
 
@inɒzɘmɒЯ.A.M (╯°□°)╯︵ ┻━┻
 
Bombard me with Smiley's, for I'll return in full strength.
 
@inɒzɘmɒЯ.A.M (∪。∪)。。。zzzZZZ
 
Mock me while you can earthling, for I'm not futile enough for your jokes.
 
6:46 AM
@inɒzɘmɒЯ.A.M ( ¬ ‿ ¬)
 
BTW some chars are invisible here. ;)
 
 
1 hour later…
8:11 AM
@inɒzɘmɒЯ.A.M ಠ_ಠ
@inɒzɘmɒЯ.A.M y u no have superior smartphone with all the symbols? ლ(ಠ益ಠლ)
 
Because .
 
that's always a good reason
 
Yep.
BTW @santiago is no more. :O
I'd miss him.
 
o.o
 
8:23 AM
I thought he would leave the chat and will not log in for a while ... or don't talk too much ... but completely deleting the profile is hard
 
Dunno what happened to him.
He suddenly went all defensive and offensive as if we were looking to kill him.
 
60-70 % survival chance sounds like a quite hard sickness
 
he wrote that a) in his profile and b) here in chat, if I remember correctly
 
Oh.
That seems bad.
 
8:37 AM
seems like
o/ @Wildcat
@inɒzɘmɒЯ.A.M here
 
You were searching this whole time?
 
whoooole time ... not
 
Hmm, meta seems quiet. :/
 
it's quite quiet for a while, isn't it?
 
It's because I'm not with my laptop.
 
8:44 AM
no laptop no cry
 
And all of the profile pics are white.
 
nokia 3310?
 
It's a lenovo tablet. The problem is with the browser.
 
why not simply change the browser?
 
One does not simply change the browser.
 
8:49 AM
meh ...
 
... hem
 
9:49 AM
Cześć! @Mithoron
 
@pH13 Cześć, polish letters - nice ;)
 
hehe
Ivan is answering many questions these days
 
Yes, very active, wonder for how long
 
10:04 AM
me too
I wanted to get to 2000 to edit questions and do not have to wait for someone approve it :P
 
Hmm, and I didn't answer almost a month. Maybe I'll catch up...
 
maybe you should
make it so!
 
:)
But still I voted and flagged quite a bit :)
 
sure :D that's often way easier ^^
 
10:24 AM
Yeah :D
 
10:47 AM
Back to laptop.
ಠ_ಠ
 
:D
 
@pH13 Just Feynman, not Bohr/
̿ ̿'̿'\̵͇̿̿\з=(•_•)=ε/̵͇̿̿/'̿'̿ ̿
@Martin it's smiley time. >:D
 
there is a fight about that
 
@Martin ಠ_ಠ
@Martin ᕙ(⇀‸↼‶)ᕗ
 
@inɒzɘmɒЯ.A.M en.wikiquote.org/wiki/…
 
10:49 AM
@Martin ლ(ಠ益ಠლ)
@Martin ̿ ̿'̿'\̵͇̿̿\з=(•_•)=ε/̵͇̿̿/'̿'̿ ̿
@Martin ¯\_(ツ)_/¯
@Martin – =͟͟͞͞ =͟͟͞͞ ヘ( ´Д`)ノ
@Martin (づ。◕‿‿◕。)づ
@pH13 The "Bohr paraphrase" argument is weak.
 
it's not that important who said it
the phrase itself is important
 
@Martin May I throw more pings and emoticons at you?
@Martin ^
^ @Martin
@Mart ^ in
So, @pH13 I have a question.
 
simply ask it
 
Sigma bonds can be s-s, p-p, d-d etc. right?
 
yes
 
11:02 AM
So, how can I know what two AOs formed the bond by looking at its structural formula?
 
do you have a special example in mind?
 
Say, propane.
 
s like sigma - you need at least some s content
 
The "at least" and "at most" bother me.
We can draw something for propane:
       H   H   H
  H - C - C - C - H
      H   H   H
So, is the C-C bond s-s or p-p or what?
 
sp3 but not exactely
 
11:07 AM
telling me that hybridization is bs and then using it :P
 
Nooooo . . . don't sell me hybridization!
 
He, he :D
 
But it's sp3 for all of the carbons I guess.
 
sure it is
 
So?
There's s character and p character.
 
11:10 AM
When I think of p-p or d-d sigma bonds, I think of linear molecules
because there it is quite easy to imagine
two p_z or d_z^2 orbitals, etc
 
Hmm . . .
So you're saying it's s-s? But then it could be s-p.
 
no, it's s and p in propane
 
So how do you tell without looking something up?
Hides
 
o/ @Martin-マーチン
 
Runs away
 
11:12 AM
points with finger on @inɒzɘmɒЯ.A.M
 
hydrogen is using only s
 
@Mithoron but it's about the CC bond
 
Wait lemme think why I'm asking this in the first place . . .
 
@inɒzɘmɒЯ.A.M :D
 
@Martin-マーチン why do freq calcs take so much time? what's so ultra hard about them?
 
11:14 AM
hmmmm
never really thought about that
analytically takes long, but should be still quite fast
 
often it takes at least as long as the optimization itself
 
@pH13 Shh my question first.
 
@inɒzɘmɒЯ.A.M How come you suddenly talk like beginner ;)
 
you have to derive your wave function twice for each basis function you have
 
@Mithoron So what's the answer? KTHXBAI NEEDZ FOR HOMEWERK
 
11:16 AM
ok ...
 
at least that's what i think
 
Ahh, I need this to understand conjugation better @pH13 @Mith
 
it's good possible .. will look it up
@inɒzɘmɒЯ.A.M conjugation in propane?
 
No, conjugation generally.
 
with the optimisation, you only have to find a good guess for your orbitals and updating this with new nuclear coordinates should be fast
 
11:18 AM
Well in molecule there are molecular orbitals - not s or p
 
scf converges faster with already converged orbitals for a diferent set of coordinates
 
@Mithoron I want to know what the two first AOs were.
I don't care about the MO.
 
You can imagine that they arise from two sp3 orbitals but before reaction those weren't there
 
what's your question @inɒzɘmɒЯ.A.M?
 
@Martin-マーチン it started here
20 mins ago, by inɒzɘmɒЯ.A.M
Sigma bonds can be s-s, p-p, d-d etc. right?
 
11:22 AM
20 mins ago, by inɒzɘmɒЯ.A.M
So, how can I know what two AOs formed the bond by looking at its structural formula?
 
hmmmm
@pH13 no that's incomplete @inɒzɘmɒЯ.A.M
 
High five @pH13
@Martin-マーチン etc.
 
@inɒzɘmɒЯ.A.M you cannot
you can guess though
 
you need to know which ao are available for each atom
 
11:24 AM
Half-filled = available?
 
Empty, filled or half-filled?
 
No... all ao empty and filled
you can ignore the core
 
Hmm.
That's what I thought. Next.
 
and everything after the valence
and then you start constructing symmetry adapted molecular orbitals
 
11:26 AM
Symmetry adapted?
 
@Martin-マーチン I've got bad memories to those lessons shiver
 
you can mix s and p on the atoms to do directions and stuff
 
Even when the two atoms are not the same?
Uh, the normal bullshit.
But in large molecules, that'd be messy . . .
 
well if the molecule has no symmetry, then you don't need to be concerned about it
 
C1 is also a symmetry :P
 
11:27 AM
that's why we use localised orbitals to have an easier picture
 
k.
So if I want to see if cyclohexene is conjugated, what do I have to do?
Start playing with hybridization?
Electron configurations?
 
@pH13 I disagree ;)
 
Not studying this stuff in English is breaking me. :/
@Jan? @Jan!
 
Jan
Good day @inɒzɘmɒЯ.A.M @Martin-マーチン
 
11:30 AM
Welcome back!
 
Jan
Haven't been here in a while xD
Had good holidays ^^
 
how could cyclohexane be conjugated?
 
@pH13 I'm already studying that.
@pH13 I'M TRYING TO SEE IF IT IS OR NOT. SHEESH.
@Jan How're you doing?
We missed you.
 
Jan
Awww, thanks =*,...,*=
 
> In chemistry, a conjugated system is a system of connected p-orbitals with delocalized electrons in molecules with alternating single and multiple bonds, which in general may lower the overall energy of the molecule and increase stability. Lone pairs, radicals or carbenium ions may be part of the system. The compound may be cyclic, acyclic, linear or mixed.
 
11:32 AM
@pH13, @Jan. @Jan, @pH13
> Conjugation is the overlap of one p-orbital with another across an intervening sigma bond (in transition metals d-orbitals can be involved).
 
but isn't that enough of a rule to "find" conjugation?
@inɒzɘmɒЯ.A.M thank you
 
Jan
Yeah no, it was kinda … I was away in … was it late June? … still trying to get my enthusiast’s badge on German (got it now) and after I came back I just struggled with workload, workload, workload and catching up with the old questions on German. I caught up yesterday xD
 
Welcome.
 
Did y'all know you can still ping dead accounts :D
 
@Jan German Rush™
@Martin-マーチン Yep.
Just pinged him a while earlier.
 
Jan
11:34 AM
Yeah, I read the old pings but for some reason I didn't feel like the ping requested my presence xD
 
@Jan No, we didn't mean you. Someone else.
You're not dead, you're undead.
 
I would say alive
 
Jan
Also, I can't work today .__. The stirring bar decided it didn't like my flash, the flask now has a hole in the bottom shaped like Pacman and my reaction was all across the hood … and has been cleaned up now.
 
@Martin-マーチン Alive? :o
 
Jan
I would re-start it, but I need more protecting group .__.
 
11:35 AM
@Jan BTW someone needz your halp.
4
Q: What angle limits should apply to Graham condensers?

feetwetI have seen Graham condensers set at an angle (perhaps as low as 30 degrees from horizontal). I guessed this wouldn't be a problem because siphoning would clear the condensate. But I recently saw an argument that Graham condensers should only be used at near-vertical angles. Thinking harder th...

This OP has some lab questions.
 
@Jan sounds like much fun
 
Thoughts you'd be the best to answer @Jan.
 
Jan
I have no clue on the Graham condenser question; I don't think we have that specific kind here (from what I can tell in the picture).
 
Well he has some unanswered stuff, take a look.
 
Jan
Skimmed across most of them, passed on most ^^'
 
11:40 AM
 
Jan
@pH13 private chat room? x3
 
BWAHHAHAHHA
 
@Jan There is a cat café in Helsinki? I have been many times in Helsinki; how could I miss this?
 
Jan
@Loong okay … not like I did xD
 
@feetwet your best chance is to nag @Jan into answering your questions. Runs away
 
Jan
11:42 AM
Oh yeah, @inɒzɘmɒЯ.A.M, when did you reverse your name? xD
 
@Jan It's been some time.
Some @Loong time.
 
wow... that's a new low...
 
Jan
Ouch =D
 
long long time ago
back in the old days
 
Before we became idiots . . .
 
Jan
11:46 AM
In a long forgotten era in a faraway land …
That ended with the End of a Era \m/
Hello @wild o/
 
Hi @Jan and everyone!
 
Who's everyone? :o
 
@inɒzɘmɒЯ.A.M, someone's everyone.
 
I guess it doesn't differ for cats.
 
@inɒzɘmɒЯ.A.M, yeah, humans are all the same for us.
 
11:53 AM
But I'm a molecule! ಠ_ಠ
 
(╯°□°)╯︵ ┻━┻
 
Jan
Not all humans are the same … some never open the fridge, right?
 
@Martin-マーチン flip tehm tabul!!!!!!!!11111!!!!111!111
 
@Jan, right. Bad humans.
 
@Jan the WAT?
 
Jan
11:57 AM
@pH13 The fridge. Because cats usually like those humans more that open the fridge for them and that pet them.
*pets @Wildcat *
 
@Jan If you want markdown to render, the asterisks shouldn't be between spaces.
 
@Jan purrrrrrrrrrrrrrrrrrrr
 
Jan
@inɒzɘmɒЯ.A.M I precisely didn't want Markdown to render there xD In fact, I think I put \* there, so it wouldn't ;)
I was so close to going to Helsinki's cat café on Monday but alas, it's closed on Mondays .__.
 
@Jan There is a cat café in Helsinki? I have been many times in Helsinki; how could I miss this?
 
Jan
@Loong It's rather new. Maybe that's how?
Fredrikinkatu. Between Kamppi and Kakkugalleria.
@Loong you sound a little bit like we're similar people; do you like metal? =D
 
12:06 PM
@Jan maybe; thanks, I will check
@Jan twenty years ago, yes; now I am probably to old to enjoy it
 
Jan
@Loong you're never too old to enjoy metal ;)
 
@Loong one is not simply too old to enjoy metal
 
I feel old.
 
I like this movie ... one of my favorites
 
Jan
I feel old … without my PhD …
 
12:13 PM
oh, please, no
 
@pH13 Yes, it is very nice. But the story is predictable.
 
don't remind me about PhD
 
Jan
@Wildcat This sounds like I want to hear what you don't want to say, but at the same time I'm too scared to ask =O
 
nighty night y'all
 
@Jan, don't ask, don't tell. XD
 
Jan
12:15 PM
@Wildcat Good that you didn't say 'don't touch', too. *pets*
 
12:26 PM
@Bon I'd like to elaborate my meta answer to yours, but first I'd want to know what I should add.
Why do you think you should've flagged as VLQ but not NAA?
@pH13 I'm too old to enjoy metal.
 
Jan
What's MathJax for =/= ?
 
for beauty
 
Jan
@inɒzɘmɒЯ.A.M I thought you were still at school?
 
@inɒzɘmɒЯ.A.M esp. you, yeah xD
 
@Jan I am.
 
Jan
12:31 PM
So you're contradicting yourself.
 
@Jan Use ≠ instead.
@Jan Nope.
 
Jan
You say you be too old for metal but that isn't possible xD
 
@Jan he just says, that he does not like it
 
Jan
@inɒzɘmɒЯ.A.M No, I actually want to use it in MathJax in a post on chem.SE xD
 
@Jan Use ≠ instead.
But it should be \neq, IIRC.
 
Jan
12:33 PM
@inɒzɘmɒЯ.A.M Thanks =3
 
"\neq" or "\not ="
 
@Jan It was? ᕙ(⇀‸↼‶)ᕗ
 
@Jan see also
1
A: Formatting Sandbox—please test stuff here

LoongMiscellaneous signs and symbols $a$ is equal to $b$ $$a = b$$ $a$ is not equal to $b$ $$a \ne b$$ $a$ corresponds to $b$ $$a \overset{\wedge}{=}b$$ $a$ is approximately equal to $b$ $$a \approx b$$ $a$ is asymptotically equal to $b$ $$a \simeq b$$ $a$ is proportio...

 
and new

 MathJax/(La/Xe)TeX help

If you have any questions about MathJax formatting used in che...
 
K guys, I'm off to Kung Fu guys. TTYL
 
Jan
12:40 PM
Why should I use a formatting sandbox if I can see te formatting below the text field? ;)
 
have fun
 
Jan
Have fun, @inɒzɘmɒЯ.A.M
 
@Jan You dont have to use the sandbox, but you can find my MathJax examples there.
 
Jan
@Loong Oooh, that's what you meant ^^'
There we go, given an answer.
An answer a day keeps @inɒzɘmɒЯ.A.M away?
 
keep trying lol
 
bon
12:50 PM
@inɒzɘmɒЯ.A.M It is an attempt at an answer but in my opinion it is very low quality because it's poorly written (and so difficult to understand), has little explanation and is wrong.
 
o/ @Todd
 
hey @pH13 - hi @bon @Jan @Loong
how's your code running @pH13?
 
@ToddMinehardt hey
 
fafoom? have not started to dive into it
but guess sth else ...
 
Jan
Hi @ToddMinehardt o/
 
1:02 PM
hey hey
 
1:15 PM
@Todd let's move to a place where not everyone get's annoyed by my linux problems xD
 
thanks for moving that stuff, appreciate it
 
@ToddMinehardt no problem
 
Jan
Wow, I love it when there are two answers to a double-digit voted question and I hack mine in and get almost instantly accepted D=
 
with luck you'll get badges for sth like that
 
Jan
1:26 PM
No, there's no badge for 'be the third to answer a question and get accepted' xD
 
there is at least one for getting higher votes than the accepted answer
 
Jan
Oh yeah, I do wonder … @Martin-マーチン who was removed, and why of all things did that give me a -2 reputation change?
 
probably santiago
as his account got deleted, all his votes were going with it
 
does anyone know if santiago is ok? his departure was rather abrupt
 
Jan
Santiago left? D= =O
(No wonder the homework questions are left untackled …)
 
1:32 PM
xD
I guess he is not really ok, as he said sth about a serious sickness
 
yes, saw that, was wondering if he had shared any information or was planning to return assuming he got better....in any event, unfortunate
 
nope
 
Jan
2:30 PM
And another homework NMR vampire strikes! Also hi @SanchayanDutta
 
Anonymous
Hi
 
Hi
@Jan circle vampire
 
Jan
bad circles vampire xD
@pH13 I should besiege him to eradicate his lowly clan!
 
you meant lol-y clan
 
Jan
2:45 PM
Leave the lolis to me!
 
Jan
3:04 PM
Things you find on aviation.SE: bbc.com/news/uk-england-york-north-yorkshire-29126161 I love the world <3
 
xD
 
3:22 PM
I do not think that santiagos votes are gone. He handed out too many of them, deleting all those would have a serious impact on the community.
 
hm ... but isn't that how the system works?
 
yes theoretically it is... but there are exceptions
 
Jan
No, I checked it on the help centre. Mods/admins/somebodies can choose to not delete people's votes if they delt out many.
 
most of the deletions are handeled on a case by case basis
 
oh, great
 
3:30 PM
it depends on the impact it might have on the community
he had close to 4k votes
 
yes
 
Jan
So who got deleted to give me -2? I'm still confused about that number …
 
Jumping in the conversation was never fun-er
 
Jan
It's always fun ;)
 
3:30 PM
@Jan Your suggested edits are gone.
 
then maybe someone else was deleted ... I had only a few de-repz
 
I didn't have any.
 
I looked into that, but I cannot tell you more
 
It must be the edits you suggested on user15489's posts.
 
:)
 
3:31 PM
typically that is the amount you get when you got an edit approved
 
Jan
Ooooh, that makes sense!
Cheers =3
 
Or should we call him he who must not be names version 2?
 
but that should only go away when the post is removed
 
@Martin-マーチン It also goes away when the author of the post is no more.
 
i don't know... but it's just 2 that's a little funny
 
3:33 PM
what's the next simple question I can answer to get many upvotes ... someone should ask about ... er ... I need another Acid accident treatment ಠ_ಠ
 
maybe it was some one-timer who was deleted in the process
 
Jan
I didn't suggest too many edits I think ...
 
@pH13 How to dissolve 5 people in -1 seconds?
 
@inɒzɘmɒЯ.A.M do you have a link for that?
 
3:34 PM
I got -14 by "user was removed" ... like a question and an answer upvote ... but it was earlier shown as many -2s ... so maybe a few approved edits from a while ago
 
You expect me to find something in that trashland @Mart?
You're so cruel.
 
i dunno
you just sparked my interest
 
I must be a legend. ᕙ(⇀‸↼‶)ᕗ
 
@inɒzɘmɒЯ.A.M that will make it
 
@inɒzɘmɒЯ.A.M yeah I guess somewhat
 
Jan
3:44 PM
Does a spoiler tag not work with numbered lists? Why not?
 
@Jan Let me see.
@Jan It works.
 
the spoiler tag has quite a few problems sometimes
 
You can do >! 1. or 1. >! if you wish.
 
you might need to use trial and error
 
@Jan Oh wait, you're right. Let me find a fix.
 
Jan
3:49 PM
Only the second worked the way it should, @inɒzɘmɒЯ.A.M
 
@Jan Yes I noticed.
It's the only thing you got. :/
 
Jan
If anyone feels that the NMR-vampire question could be phrase even better, feel free to do so ;)
 
@Jan Oh wait, you can put >! before each line. It will work.
 
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