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12:05 AM
Hm, unfortunately, the OP didn't show any effort with the K2[HgI3(OH)] question. The answer to this one may not be trivial.
 
Jan
Because of the difference between triiodide and tris(iodide)?
 
yes
 
Jan
If it were triiodide, it would be mercury(0). That sounds improbable (but not impossible).
1
Q: Hofmann elimination

Resorcinol An unknown amine is treated with an excess of methyl iodide. Two equivalents of methyl iodide react with the amine. The anime is treated with silver oxide and water, and then heated to $120^\circ \mathrm{C}$. The resulting products are trimethylamine and ethylene. The unknown amine is ...

 
Hehe, that would be K2[Hg(I3)(OH)] ;-)
 
Jan
Take a cloo~se look at the question’s current (revision 7) wording. Especially @Penta =D
Should one always write triiodide as (I3) in complexes?
I.e., should every non-monoatomic ligand be enclosed in brackets?
 
12:18 AM
> When ligands are polyatomic, their formulae are enclosed in parentheses.
 
Jan
On another randomly unrelated note: It’s always nice if you guess correctly that an answer by Martin will come in. And it’s good to have a well-calculated MO scheme of CH2N2 at hand, now =D
Oh yeah, Loong. In a Fischer projection, is it the carbon with the highest oxidation state placed closest to the top, is it the carbon with the lowest IUPAC-nomenclature number or do the two definitions coincide (or should I make that a question on the main site)?
 
> The atom numbered 1 according to normal nomenclature rules is conventionally placed at the top of the main chain, which is drawn vertically and other groups are drawn on either side of that main chain.
 
Jan
12:36 AM
Cool, thanks. Now I’m tempted to find an example where using atom number 1 will put the higest oxidised carbon closer to the bottom xD
 
12:50 AM
Hey, I'm in Analytical Chemistry and I'm working on potentiometry and I'm having a really hard time. Any really good resources anyone can suggest? I'm not a fan of the text (Skoog.)
3
 
1:32 AM
@Loong Ninja'd by 34 seconds, but I flagged dupe earlier ;)
 
1:49 AM
Look at that !!! This is absolutely weird ! :D
Mpemba effect doesn't not exists at all ! ^^
 
@Hexacoordinate-C It's not like there' sth original in this
 
2:17 AM
L'expérience est une lanterne qui n'éclaire que celui qui la porte. :)
 
 
2 hours later…
3:52 AM
why do two atomic orbitals give two molecular orbitals?
 
4:17 AM
4
Q: why do 2 atomic orbitals form 2 molecular orbitals?

ApoorvAccording to molecular orbital theory, two atomic orbitals form two molecular orbitals analogous to waves combining constructively or destructively but how can a wave combine destructively and constructively at the same time to produce two molecular orbitals? why don't two atomic orbitals combine...

 
4:35 AM
@MelanieShebel thank you
Does "Shebel" have any connection with Ethiopia?
 
No
I am Polish and when my family moved to America, Przybyl' was too hard to pronounce so they thought Shebel was close enough.
4
 
@MelanieShebel how do you pronounce "p" and "r" and "z" together?
 
click the audio button on the left
 
but how do you pronounce it still
 
I can't explain it
 
4:46 AM
alright
 
It's like Pshr
but the r is trilled like in spanish
 
did you reverse the r and the sh?
 
Sort of... it's hmm
 
In en.wikt, "prz" is denoted /pʂ/ which means that the "r" and the "z" combined to form a new chemical compound...
2
 
it has hybridized orbitals
 
4:50 AM
More interestingly, "przybysz" is denoted /ˈpʂɨ.bɨʂ/, so "rz" and "sz" are the same...
 
Different mechanism, same product.
 
5:43 AM
@hBy2Py Yeah, I've seen the answer, that must've took quite a bit of time to type out. Thanks! ^_^
upvotes
As for the "switch of the checkmark" ... I'm still mulling over it, actually 3;)
Oh, and @hBy2Py Brian, just curious (since you mentioned you've graduated from the MIT)... How much undergrad physics do you still remember? (More specifically, Lagrangian mechanics)
 
 
2 hours later…
7:35 AM
I think I have a carbon-addition mechanism
$\ce{RCH2Br ->[\ce{HCN}] RCH2CN ->[\ce{H2O}] RCH2COONH4+ ->[\ce{OH-}] RCH2COO-}$
 
8:17 AM
Is this viable?
 
user228700
8:34 AM
@paracresol U do know that a room called The h Bar exists, alle?
 
8:53 AM
@orthocresol here?
 
9:10 AM
ethyl bromide to propanoic acid:
1. $\ce{CH3CH2Br + CN- ->[\text{cold, aq}] CH3CH2CN + Br-}$
2. $\ce{CH3CH2CN + 2H2O + HCl ->[\text{heat under reflux}] CH3CH2COOH + NH4Cl$
The isolation is left to the reader as an exercise.
 
9:36 AM
@Kaumudi.H Yeah, but it's full of stuck up prigs -- I'm more at ease on Chem.SE though ..
 
@paracresol konnst du mir helfen?
 
@DHMO NO
 
user228700
@paracresol That's rude and also incorrect.
 
@DHMO *Kannst?
 
könnest
 
9:38 AM
@Kaumudi.H O_o
@DHMO Great, now I'm confused...
I thought it was supposed to be kannst? O_o
 
i'm probably wrong though
 
user228700
@paracresol Then again, "I learned long ago, never to wrestle with a pig. You get dirty, and besides, the pig likes it."
 
I was trying to use the subjunctive @paracresol
 
@DHMO Not necessarily... Google translate "confirms" it's Kannst... but since I don't really trust Google translate, I'll guess I'll just ask Jan ._.
@Kaumudi.H Bu...but...I don't wrestle ._.
 
user228700
You're very funny, indeed.
 
9:42 AM
O_o
 
that's probably the wrong place to use the subjunctive
 
@DHMO Looks away
Ah well, what is it anyway?
:O
 
I insist that she go
if i were you
 
@DHMO @M.A.R.? Um...okay...
 
ಠ_ಠ
 
9:44 AM
the two verbs in italics are in subjunctive
 
Shoots self in the head while simultaneously biting down on a cyanide pill
@M.A.R. So... how goes?
 
Boring
 
Oookay ._.
 
würdest du mir helfen?
würder ihr?
 
Sometimes you feel life is going too fast and is not fast enough at the same time.
@MelanieShebel Teehee
 
9:46 AM
@M.A.R. Never felt it ._.
@DHMO ...
4 mins ago, by paracresol
Ah well, what is it anyway?
@M.A.R. About your Entrance Examinations...
 
oh i thought you were asking what is subjunctive
 
They're in six months or so
 
37 mins ago, by DHMO
ethyl bromide to propanoic acid:
1. $\ce{CH3CH2Br + CN- ->[\text{cold, aq}] CH3CH2CN + Br-}$
2. $\ce{CH3CH2CN + 2H2O + HCl ->[\text{heat under reflux}] CH3CH2COOH + NH4Cl$
The isolation is left to the reader as an exercise.
 
@DHMO ಠ_ಠ
 
is this right?
 
9:48 AM
Lemme give it a read
 
@DHMO ''what subjunctive is'' -- If we're trying to show off grammatical skills, we should know that subordinate clauses do not have subj-aux inversion ;)
 
._.
 
can @M.A.R. help me?
 
@DHMO Yep, that works
 
@DHMO About what?
 
9:51 AM
3 mins ago, by DHMO
37 mins ago, by DHMO
ethyl bromide to propanoic acid:
1. $\ce{CH3CH2Br + CN- ->[\text{cold, aq}] CH3CH2CN + Br-}$
2. $\ce{CH3CH2CN + 2H2O + HCl ->[\text{heat under reflux}] CH3CH2COOH + NH4Cl$
The isolation is left to the reader as an exercise.
 
then what good is grignard if that works?
 
Oh, I don't wanna turn ChatJax on
 
@DHMO As for isolation...hmm
 
@M.A.R. you dont need chatjax to see it
 
I need ChatJax to understand it
@paracresol Both seem to be correct
 
9:53 AM
@paracresol isolation is easy
you have propanoic acid molecules, ammonium ions, chloride ions, and bromide ions.
It is textbook exercise to get rid of the last three
 
@DHMO You can synthesize alcohols, (from aldehydes and ketones)...you can use it to synthesize dialkyl cadmium which can be used to prep ketones from acyl halides...among other things...
 
but you need anhydrous condition
 
^ How come?
4 mins ago, by paracresol
@DHMO Yep, that works
 
(i don't actually know how to get rid of the last three)
 
9:56 AM
i thought grignard is famously anhydrous
i only know NH4+ will go away when i add NaOH
oh, shaking with heptane should work, right
 
@DHMO Well, when you're synthesising it, yeah.
@DHMO O_O
 
Anyhow @DHMO @M.A.R , bye guys o/
@M.A.R. .........................................
 
@paracresol \o
 
\o/
Oh and do me a favour... screw around with @Kau, when you get the time 3;P
 
10:00 AM
what did she ask?
Is boiling a chemical change?
intermolecular bonds are broken...
AlCl3 even has two gas phases, one as dimer, one as monomer..
 
@DHMO Boiling is physical, but some chemical reaction might happen when boiling.
 
but bonds are broken @M.A.R.
 
@DHMO Well, this is all fuzzy rather than clear-cut, but if its intermolecular bonds, it's considered physical and not chemical
But again, the labeling itself doesn't matter. What you plan to do with it does.
 
alright
@M.A.R. acidic/alkaline hydrolysis of nitriles have a higher yield?
 
Higher yield than what?
 
10:16 AM
than the other option
RCN + 2H2O -> RCONH2 + H2O -> RCOOH + NH3
 
Other option?
Hmm, not sure.
 
acidic hydrolysis vs alkaline hydrolysis
I guess acidic hydrolysis is better for the first step but alkaline hydrolysis is better for the second step
 
I don't think the yields are much different
I haven't studied organochem in five or six months though
So there's a good chance that I'm wrong
Our entrance exam doesn't emphasize on organochem at all unlike yours
 
I guess alkaline is better because it can release NH3
@M.A.R. assumption ;)
no i dont have an entrance exam
i am learning ochem for fun
 
Nice
 
10:21 AM
well i do have an exam but not about nitriles at all
 
I wish I could do that
 
do you agree?
 
Yeah I think I remember it was that way
But again, not sure
 
how can we increase the yield of the nitrilation?
assuming that it is through SN2
i don't want isonitrile at all
oh, we can use silver ions to precipitate out the bromide right
 
10:41 AM
1
Q: Perhaps let's eliminate [tag:classification]?

hBy2Pyclassification has 14 questions right now, most of which would either fit neatly under terminology or could just have classification stripped off. Of the 14, two actually do deal with classification systems of one kind or another: What do these mineral classification symbols mean? Is there an ...

0
Q: Quote box coloring, should it stand out more?

Melanie ShebelWhen I'm reading a post with quoted material, the quote doesn't seem to stand out to me, maybe it's something about it being yellow, but I cannot see it. Quoth the raven Nevermore The blue here on meta stands out, but on Chem.SE it's a pale yellow which doesn't seem to stand out to me. ...

 
0
Q: Viability of proposed carbon-carbon bond-forming reaction

DHMOHere is my proposed synthetic pathway to make propanoic acid from bromoethane: $\ce{CH3-CH2Br ->[\ce{KCN(aq)}][\text{heat}] CH3-CH2-C#N}$ $\ce{CH3-CH2-C#N ->[\ce{KOH(aq)}][\text{heat under reflux}] CH3-CH2-COOH + NH3\uparrow}$ I have some questions about my proposed pathway: Is it...

 
11:28 AM
@orthocresol please, shed some light here ^
 
Firstly, you can't predict the yield of a reaction on paper.
 
you can find info about both steps
and multiply the yield
 
Yeah of course. Do they come with any yields?
As in, did you find any information about percentage yields for these two specific reactions?
The thing is, we can't pull out numbers from thin air about yields. We might have a general idea of roughly how good one step is, and what problems might potentially occur in the synthesis (Klaus already mentioned that bromoethane is difficult to handle), but until you actually do it in the lab, you don't really know.
 
of course they do come with yields
i'm just too lazy
 
Right.
 
11:33 AM
what
 
I guess my point went right over your head.
 
synarchive lists steps with yield
one can dig through that page
 
Yeah. How did those people get the numbers?
By doing the experiment, right?
 
yes
im sure those two steps have been done before
 
Which leads to this point:
5 mins ago, by orthocresol
Firstly, you can't predict the yield of a reaction on paper.
 
11:35 AM
im not asking anyone to predict
please proceed to secondly
 
"How do you isolate the product?" - en.wikipedia.org/wiki/Acid-base_extraction
Anyway- point was - if you want yields it's going to be some number that somebody looked up in a database somewhere.
Synarchive is not gonna have those two steps.. if anybody actually needed propanoic acid in a total synthesis they would just buy it.
 
good points
thank you
 
If you're looking for experimental yields then that's all good, however I just wanted to make sure to clear that up. You can't pull predicted percentage yields out of thin air
I've seen really on paper simple steps go with 40% yield.
 
which step?
could you respond to the question about silver ion?
 
13
Q: Why do SN2 reactions of alkyl halides proceed differently with KCN and AgCN?

Mohd ShakibAlkyl halides react with $\ce{KCN}$ to form alkyl cyanides as the main product, whereas the use of $\ce{AgCN}$ leads to isocyanides as the chief product. Why does this happen?

 
11:50 AM
oh so it wouldn't increase the yield
 
I'm not really sure I suppose. It's possible that Ag+ might help to abstract the bromide ion but that's more for SN1 type reactions
and only if the Ag+ isn't tightly associated with CN-
otherwise you'll probably get the isonitrile like above
 
12:26 PM
ok thanks
 
1:06 PM
@Loong What software do you use for the diagrams of nomenclature (molecule structural diagram + name)?
 
@DHMO ChemDraw
 
And could you shed some light on my question?
 
@paracresol I never did any Lagrangian mechanics in my physics classes, just ... kinematics, I think it was?
I have looked at it a little bit lately, reading into Pauling & Wilson's Introduction to Quantum Mechanics:
But I'm not anywhere near a solid understanding of it.
 
1:51 PM
Was there any bit of chemistry that Pauling didn't actually touch?
Guy seems to have worked in literally every single discipline of chemistry.
 
@orthocresol just like you
and every knowledgeable person in this room
 
Well I'm a student, I don't work in chemistry.
 
This is a nice exercise. I don't actually know all of the answers.
 
Not yet, at least. And when I do, it's only going to be in one area, probably.
 
1. 7-cyano-5-(methylethyl)-4-(oxomethyl)hept-3-en-6-ynoic acid
right
no, I am not going to attempt the rest.
 
2:41 PM
Thanks for the edit, @M.A.R. I wasn't sure what the convention was for tags in titles. Now I know! :-D
 
 
3 hours later…
5:11 PM
2
Q: Is [site-cleanup] (Meta tag) worth having?

hBy2PyIn this Meta question I went ahead and applied the new Meta site-cleanup. Is this a good Meta tag to have? It seems like it would be a useful category to be able to search over. In particular, I'm aware of TRE 1 and TRE 2 (et seq.) that it would fit onto; perhaps there are others? Or, will it b...

 
 
1 hour later…
6:36 PM
Question for the Chat:

Chalkboard or Whiteboard?
 
Both
-1
Q: Is my science of this correct?

Senthuran Mahhttps://youtu.be/thSeYzcPrqs ^^ This is the video. On the video it shows a water bottle getting crushed by the surrounding air. My understanding: When the person put cold water over the bottle which has Hot water inside it, the hot water produces water vapor which increases the pressure inside i...

What in the world is this title . . .
 
pretty dumb title
@M.A.R. that's not an answer. I'm seriously going out to buy a board today.
 
Change it to "Did I science this correctly?"
 
@gannex I like whiteboard when there are people around me that I don't know or have to prove myself to.
 
@M.A.R. what does that have to do with anything?
 
6:38 PM
I like blackboards when friends are around
@gannex Dunno. Whiteboards seem more official
 
I like whiteboard, but they dry out quickly and some of them don't erase well. Chalkboards can be annoying too, though. I hear there are better and worse ones.
 
@Loong Are you daring me?
@gannex The worst thing about a whiteboard is a light blue board and a dirty eraser, yeah. And the worst thing about a blackboard is the noise the chalk might make.
 
@M.A.R. I agree. Probably whiteboard is better for home use, but a reeally good quality chalkbaord is nice
 
@gannex The chalk is more important than the board IMO
 
Chalk dirties your hands.
 
6:43 PM
I agree
 
@orthocresol So does a messy pizza
 
but whiteboards get all gross after a while
I hear the crappyness of a chalkboard depends on the material it's made of.
 
The last time I used chalk on a blackboard was during my PhD defense. After two hours, the sleeves of my black jacket were white.
 
@gannex Well of course. Also humidity
 
@Loong I have a similar problem when performing in a concert.
 
6:45 PM
@Loong You should welcome change at all times
 
The rosin used for the violin bow leaves a nice white streak on a black jacket.
 
At least it's nice
Would you preferred if it was mean?
 
No. But it's still irritating, you have to try your best to rub it off before going on stage...
 
hmmmm I think I prefer chalk, but the problem is that I doubt anybody in town sells high quality chalkboards.
 
@gannex You can buy blackboard paint and make it yourself.
 
6:57 PM
1
Q: Are questions about the Ideal Gas Law chemistry?

R.M.(This is also applies to ideal gas law related topics, like Boyle's law, Charles's law, Gay-Lussac's law, etc.) On a recent question about how a bottle of air behaves when the temperature changes, a commenter said: This isn't a chemistry question ... This is just physics. While the comment...

 
Jan
@Loong, when writing out the full name of SAM, should the S be italicised? I.e. should it be S-adenosyl methionine or S-adenosyl methionine?
Also hi everybody o/
 
@Loong I might try that
 
7:16 PM
@Jan Yes, italic. The element symbol is used as a locant here.
@gannex In schools, they have to repaint old blackboards regularly since the rough paint is rubbed off.
 
7:58 PM
Crud . . .
Could someone edit this please?
-3
Q: Precentage of yield reaction question

sapir By bubbling Cl2 in a solution containing 176.6 g of MgBr2... Hi guys, I need help with this question please. my thought was like this.. 176.6g/184.13=0.9591 moles of MgBr2 and also of Br2 cuz its the same ratio so 0.9591X159.82=153.28 gr of br2 now the yield: 135/153.28=0.88 percent. in my lo...

I'm busy studying
 
@M.A.R. hmpf, the original question is terrible
 
@Loong Can't get past the first sentence. I think Smithsonian would like this sentence as an artifact
 
The first part essentially is: “135 g of Br2 are obtained. How many grams of Br2 are formed?”
 
@Loong Nothing wrong with that
Whoever required chemistry questions to require a process in answering is an idiot
 
And values for the molecular weight given in amu? Seriously?
 
Jan
8:11 PM
Yeah, I was thinking of editing that, but half of the quote would be [sic!]
 
@Loong Of all the problems there, this was the one you could pick on?
[sick]
 
@M.A.R. This one creates physical pain.
 
@Loong Starring this for later amusement and annoyance
 
Jan
2 days ago, by Loong
When you think that you have seen everthing you could do wrong with units and SI prefixes:
 
1
Q: Why hard-boiled egg has more entropy than a normal egg?

A---BThis was a question that was asked to me in my recent test. I said that entropy will decrease as a hard boiled egg has molecules in more organised way than a un-boiled egg, but I was marked wrong with a remark that entropy will increase because the protein and other molecules are decomposed due...

This seems to be an unfortunate test question.
 
8:15 PM
OK, excuse me for a second
 
@Jan We could start a freak show.
 
!!FLIP/ALLTHESTUPIDFRIGGINGSTUPIDCHEMISTRYTESTSINTHEWORLD
 
(づ๑ʖ๑)┛︵ⱯꞀꞀ⊥HƎS⊥∩ԀIᗡᖵᴚI⅁⅁IN⅁S⊥∩ԀIᗡƆHƎWIS⊥ᴚ⅄⊥ƎS⊥SIN⊥HƎMOᴚꞀᗡ
 
Jan
!!untable
 
┻o(T_T )ミ( ;_;)o┯
 
8:16 PM
Hehe
 
@Chemobot Is this a person's mitosis?
 
I just feel like it doesn't test the person's understand of entropy, but rather the person's understanding of an egg.
I'm pleased to know the instructor knows about eggs, though.
understanding*
I have a poor understanding of grammar.
 
Jan
Eggsept that the concept should maybe have been extended from the knowledge of proteins? That would make the question less eggdgy.
 
Eggs are the most important part of half of all Earthly chem-sacks' breakfast
 
Jan
I don’t eat eggs for breakfast. What does that make me?
 
8:19 PM
Deficient?
Egg deficient
 
@Jan eggceptional?
 
Jan
I eggcept that answer!
 
eggcellent!
 
OK, your puns megg me feel sick
Well, half-pun half-word play
@Hipp how come chemobot can't translate?
 
Jan
One more upvote and it shall be an eggpic day again.
 
8:25 PM
I've never had an eggpic day
 
Jan
Lol xD I should have said answer upvote xD
 
That's exactly why it happened to a question
 
Ah, I never answer questions.
seldom* not never
 
Jan
!!img/4-(prop-2-en-1-yl)phenol
 
Jan
8:30 PM
\o/
 
!!img/chavicol
 
Hey, I wrote a how-to guide on pass organic chemistry and I was wondering if you guys had any additions or criticisms of it
 
I guess if you don't like organic chemistry, you will never be good at it no matter what.
Just like history.
To the uninitiated like me, history might sometimes seem like a mash-up of random names and random locations that are supposed to have a connection
 
Bahaha
 
Jan
8:36 PM
I find history fascinating.
!!img/orthocresol
 
Jan
Please don’t mind me, I’m just checking if I got my chemicals right =)
@Melanie would it not be correct to have typically in that position, to emphasise that not drawn belongs together?
 
It probably doesn't make a difference, it read kind of awkward to me but looking back, I see your intent.
 
Jan
Okay, I edited back. I left the sulfurs, though, so you don’t have to reedit ;D
 
I've been going through with a grammar checker on posts, especially newer ones, to clean up grammar sitewide... one post at a time, though.
I did this a few weeks ago with articles I'd written and Google traffic shot up as a result. Even with articles that never really saw traffic in the first place.
I was surprised (and appalled) at the amount of grammatical errors I had in my stuff. :S
 
8:51 PM
@gannex If you'd like a place to start: tcm.phy.cam.ac.uk/castep/CASTEP_talks_06/montanari1.pdf
 
@Jan -1 too few [sic]s in the first sentence
 
Jan
And zero [sic!]s in the second. I should really be ashamed of myself.
 
I'm ashamed of yourself as well.
 
I wonder if the "Br2 t" is supposed to mean anything or is just a typo.
 
Jan
8:58 PM
I was thinking, t could be meaning something like theoretical?
 
That could work.
 
Jan
I overthought o.o
Oh, the hydrogen-oxidation-question yesterday was a cross-post. Where was our cross-posting detector?
2
Q: When a molecule loses hydrogen atoms, does it become oxidised?

SapphiraI had the following question on a bio test covering cell respiration and glycolysis, but I'm not sure if I agree with the answer. When a molecule loses hydrogen atoms (as opposed to hydrogen ions), it becomes B) oxidised According to my textbook (Principles of Life, 2nd Edition), oxidati...

 
Hullo!
 
Jan
Hi o/
Please don’t overthink the overthinking image I’m overthinking about, @Mith ;)
 
9:08 PM
:)
 
@Jan Please do overthink: Did I make the meme myself, or online, or was it a separate image online?
 
0
Q: Halogens or Noble gases, which are more non-metallic?

Prakhar ChoudharyNon metallic character increases along a period and decreases down a group. Therefore the most non metallic elements should be the right-most. But the right-most elements are noble gases. Do they count?

 
Gah, my eyes! Doncha put this infective meme stuff! ;)
 
@Jan I found another one:
> g = 9.81 ms<sup>−2</sup>
 
Jan
9:18 PM
I’m taking a long and hard look at it but I can’t tell what’s wrong except that the g should be italicised …?
 
Lack of a dot, perhaps?
 
Jan
Ooooh yes, dot/thinspace.
My mind just wouldn’t read the m as milli … ^^'
 
At least they got the minus sign right
 
Jan
We should introduce the new typographic convention of writing M as the unit symbol for a metre so it can no longer be confused with milli. The reasoning is more sound than that applied to litre.
 
9.81 per square millisecond or 9.81 metres per square second?
I have just checked, it's included in my short guide: meta.chemistry.stackexchange.com/a/2978/7951
> The latter form may also be written without a space, i.e. “$\mathrm{Nm}$”, provided that special care is taken when the symbol for one of the units is the same as the symbol for a prefix. This is the case for $\mathrm m$ (metre and milli), and for $\mathrm T$, (tesla and tera).
 
9:30 PM
!!greet/@Mithr
 
Welcome to The Periodic Table @Mithr! 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!
 
Jan
(\end occurred when \ifx on line 41 was incomplete)
 
!!Jan/restart
 
Jan
@Jan I don’t get that error. 1. There is no \ifx on input line 41; 2. The previous \ifxs are properly terminated by \else and \fi sequences.
 
Oh, when I edit a revision comment that includes MathJax, terrible things happen.
 

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