You know I'm invested in Chem.SE when I'm willing to type up a mammoth thing like this with no rep on the line at all. <grouse> Stupid fun community anyways.
In his answer to a question about crossing out units in dimensional analysis, Loong notes that the \cancel{} LaTeX command can be enabled in MathJax by using \require{cancel} at the start of a MathJax block.
What other commands/features can be enabled in MathJax through the use of \require{}, or...
@M.A.R. @Martin-マーチン @Jan @mhchem @ortho You all may be interested to take a look at the final product, since you engaged at various points in the process.
but even the Markdown features here are borked...references and footnotes don't work...that's Stack Exchange's fault
we could argue that a lot of this functionality is not the domain of MathJax, since "MathJax isn't LaTeX", but we really want this: manuels.github.io/texlive.js
The goal here is to support rudimentary maths support so that you don't have to revert to Unicode and manual stacking. Everything else is overkill fit normal and new users
@hBy2Py lucky for you I have another opinion: the Internet is very slow and mostly sucks...most websites are bad; this is connected to the prevalence of JavaScript IMO
Well... You can try... Btw. @ringo you could always ask such questions on meta.chem if you're stuck. It's not on topic at Tex.sx, because MathJax is not run by LaTeX
Not sure if that would be overshooting it, Brian, there are oh so many browser options out there, it's almost impossible to include all... And it might change quickly
It's a fine example of the fragility of digital systems which, while in theory deterministic, give the appearance of random behavior due to the near infinitude of subtle different fiddly bits they contain.
@hBy2Py Nice. The "may" in "other sites may load an older version of mhchem" is not 100% correct. It is definitely a "will". IF you use \require{mhchem} AND we still have MathJax v2.x (I guess, for a couple of years, we will) AND no other mhchem version is loaded THEN this will load the "legacy" version on mhchem.
@M.A.R. If the SE database should hock a hairball and this post and all its answers were to disappear, I would be very anguished but no way in hell would I write all that up again.
@hBy2Py Well, erm, yes. Almost. Kind of. I am okay with the text. The full story is: I created a new mhchem version. This is used at Chem.SE (and was explicitly loaded). For the \require command, my new version will be loaded with MathJax v3. Currently we are at v2.7 and we did not want to secretly change the behavior. So for the time being, \require will load the legacy version.
BTW, You don't need to link to my comments/chat messages.
Just do the proof yourself (test that \require loads a different version than Chem.SE uses) and you could claim the fact without citing me, which would make the sentence much easier to read :-)
Hey @Mart what do you say about a probably one-time chat event to edit/close away homework-tagged questions? CC @Ortho @Jan @hBy2Py @Penta @DSVA @Gan @Hexa @Loong @Zhe @Not @Mith @Mel Damn that was a lot of people to ping for a quiet chat @Chemobot
I am God. What I say takes place. Bow to me puny humans. Be scared of me. For when my angels will come the righteous will be victorious. This is one of my deepest secrets. And you shall obtain the answer only by hardest work.
@M.A.R. I am currently more concerned with doing the reaction tag. Sorry from that, I'm still on holiday, so I'll be thinking about it from Monday on again.
Also, we need to decide what to cull in the process. I'm talking about those questions that get answers with pity up votes...
@M.A.R. what about the closed ones that won't get deleted?
I want to know the configuration and hybridisation of the compound, hexaaquavanadium (III) ion that is $\ce{[V(H2O)6]^{+3}}$.
In this Vanadium is in $+3$ oxidation state its electronic configuration is $\mathrm{[Ar]4s^0 3d^2}$.
So there are $3$ more empty $\mathrm{d}$ orbitals.
Hence the hybri...
What happens, or what should I expect, when I ask the community to remove ("burninate") a tag from the system? Is there an established process for the community to follow?
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Only 30 results for questions with more than 10 votes.
Question; should we make another chatroom for the event(s)?
If someone wanted to come to the room during the event and talk about the topic, Haikus are awesome / Chemistry's even better / So pull up a chair, they're technically in the right
I'm looking for a chemical hardener that I can add to breastmilk to turn it into a stone. I have seen others use one but they will not share what they are using. In their video they add about 1ml of secret solvent to 15ml of breastmilk and heat it on low heat for a couple minutes. It hardens comp...
@hBy2Py This one event will be about the [homework] tag. It might metamorphosize to TRE II, and it might not. But if you mean that that's going to be the only filter, no
I don't know whether it's possible to pull up stats about RemoveAbandonedClosed, but I'd wager that a large proportion of homework questions that come in end up as that.
I guess there is not much point in complaining. If I want something to happen (question quality to improve), then I have to try and do something about it.
The really frustrating thing with a lot of these basic questions is the feeling that there has to be a duplicate question somewhere around.
But unless I've happened to have interacted with one, it's such a pain to try to track anything down.
So, if it's a pain for me as an established user, it's only going to be more of a pain for someone who isn't familiar with the site or with the SE search functionality
Hmm. First non-closed only tagged with homework, then closed only tagged with homework. We'll probably just vote to delete ones with a negative score, unless the answer has a score of more than or equal to 3.
@hBy2Py Only closures. Dupes is included in the closure I think
1. Edit questions with the only tag being homework which are non-closed 2. Edit questions with the only tag being homework which are closed but don't have a negative score. 3. Delete vote all the questions with the only tag being homework and which are closed but not ones with an answer score of at least 3. 4. Delete vote all the questions with [homework] that have a negative score unless there's an answer with a score of at least 3. 5. If all the above was successful, proceed to use tag pairs as Brian suggested
I don't know if it's some visionary dude coming up with a revolutionary idea, some lunatic who wants to prove sciencez is wrong and water can be a fuel, a curious "chemistry layman"1 who aims to understand how glues work, or someone in dire need of a miracle worker substance. They come up with so...
Plenken is a German typographical term for the insertion of inappropriate spaces before a punctuation mark.
Its counterpart is Klempen, the incorrect omission of a space after punctuation marks.
== Etymology ==
Plenken is derived as a borrowed word from the English blank. Its antonym klempen combines plenken and klemmen ("to clamp"), exchanging the K and P in such a way as to suggest both phonetically and orthographically its relationship and opposite meaning.
Both are internet coinages, dating from Johannes "Jödel" Leckebusch's introduction of plenken on MausNet in 1988 and now widely used on...
@hBy2Py Probably easiest to bring it to mod attention, since you need multiple 10k's to delete a question.
And not all that many 10k's check the review queue too often (I know at least Jan, Klaus, ron do). I'm sure many more do but not so regularly, hence it can take a while.
Smith and Martell obtained a series of data for the binding of trivalent lanthanide ions, $\ce{Ln^3+}$, with various carboxylic acid ligands (amongst them the well-known EDTA).1 A graph of the formation constants is attached ($K_\mathrm{f} = [\ce{Ln(edta)-}]/[\ce{Ln^3+}][\ce{edta^4-}]$):
Due t...