The Periodic Table

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1,3-feeds

00:01

Has anyone else noticed issues with MathJax in the StackExchange app? I'm aware the comments and titles don't render MathJax automatically, but I've also seen questions where certain math expressions lead to error messages in questions. The most recent and frequent example I see not rendering is ...

pentavalentcarbon

00:34

@gannex yes, I will find a sexy chart for you to look at, gimme a sec

thank Frank Jensen for those last two

@Zhe Advisor wants me to look for a job while I write my dissertation (as we discussed). I just want to sit on my couch at home for a few months...

orthocresol

01:40

Q: PLEASE HELP! Mole reaction HELP!

Given the reaction: 6 HCI + 2KMNO4 + 5 C2H204 ---> 2MnCI2 + 2KCI + 8 H20 + 10 CO2 + 65.46 KJ How much energy would be produced form the reaction of 10.0 moles of KMNO4 (in an excess of HCI and C2H204)?

reaction mole

Title of the day.

I wonder whether this is copied from some OCR'd document.

pentavalentcarbon

I bet Georgia Samuels' name isn't actually Georgia Samuels.

gannex

01:59

thx penta

I actually have that book... maybe I should get to reading it

pentavalentcarbon

Jensen is lit, highly recommended

gannex

Jensen is "lit"?

I'm not sure that's how I'd describe it XD

pentavalentcarbon

grad school warps your mind

gannex

last Saturday night I was sitting there at 4 in the morning and I was just like

wait, wtf am I doing with my life?

then I realized how important it was to know the exact activation energy of something

for a moment there I was pretty freaked out tho

pentavalentcarbon

I am never up at 4 AM and haven't been since 2007 for any reason other than needing to get to the airport early

gannex

02:03

nice. sleep hygiene is good

I wonder if it would be worth buying a physical copy of Jensen

I want to own like 5-10 physical textbooks, but only the ones where I really think I have a decent chance of actually reading the whole thing

I just bought this neat pocket-sized book: oupcanada.com/catalog/9780195069181.html

pentavalentcarbon

hmm, never even heard of that one

but I like my physical copy aside from the coffee I spilled all over it

devil's advocate: I haven't read most of the books I own

gannex

it's a nice pocket-sized introduction to MO theory

kinda introductory, but I'd be lying if I said I understand everything in that book

gannex

02:51

Fawad

@gannex do you know when DHMO will come?

1,3-feeds

03:28

Q: Do we really need [homework]? [Part 2]

While we're on the topic of getting rid of tags, I would like to bring this up as a first step towards making a new closure policy. This has actually been discussed before. See: Should we have a homework tag? Apparently, at the time, it was thought to be helpful, despite an SE employee explicitl...

discussion tags homework

3 hours later…

gannex

06:40

who designated me the DHMO diviner??

Fawad

@gannex what?

No jokes. When will DHMO come? Any one know?

2 hours later…

satyatech

08:15

Hey loong you here?

A question dude ,if I have %of activated molecules at a particular temp then how can I find Ea

mhchem

09:00

@hBy2Py You mean the one with the rendering error, not rendering at all? $\left(\ce{H3C-C#CH\right)}$ I'd say the error is justified, because \left( and \right) need to be on the same level to termerine what is between them.

The last update made \ce a block, to allow $V_\ce{H2O}$ . So sorry for breaking your post, but I think it is better this way.

M.A.R.

09:17

@1,3-feeds My stance on this is now 'whatever'

M.A.R.

09:36

Happy Nowruz everyone

Fl.pf.

09:51

I think the homework tag should stay, but every question tagged as homework should be insta-deleted.

M.A.R.

@Fl.pf. Huh, why?

There are a lot of useful homework-tagged questions.

Fl.pf.

really? all homework questions I see are copy-pastes without any own contribution. A 'useful' homework question in my opinion would be one where you can't see that its homework and therefore doesnt need the homework tag

M.A.R.

@Fl.pf. You can go to the homework tag's tab, and sort by votes, to see better questions.

Fl.pf.

I know, what I wrote was an exaggeration to make a point...

M.A.R.

It's hard to tell whether something is literal or not when I haven't been interacting with you a lot.

For instance, this @Ortho guy is never serious. He's a pack of jokes.

Fl.pf.

10:01

ye I'm sorry, text is sometimes not the best method for using indirect methods of communication like humor, sarcasm etc

also, i hate smileys

M.A.R.

Me too.

Smileys are kinda redundant most of the time

Fl.pf.

M.A.R.

!!flip/:)

Chemobot

(づ๑ʖ๑)┛︵:(

skull petrol

11:04

!!flip/:(

Chemobot

◟(`ﮧ´ ◟ ):)

skull petrol

!!flip/smiley

Chemobot

(∿°○°)∿sɯᴉꞁǝʎ

skull petrol

What happened to the "l"?

!!flip/l

Chemobot

◟(`ﮧ´ ◟ )ꞁ

hBy2Py

11:22

@mhchem Take a look at the actual Markdown of the post -- the syntax is correct in what I actually composed. Somehow that final } got transposed between when I wrote it and when MathJax tried to render it.

Ahh -- never mind!

I must've been looking at the wrong snip of MathJax.

I did make a typo.

Yes, I completely agree, it is better this way.

Now I just need to get a better set of eyes.......

@pentavalentcarbon Hm... does the term 'freelance computational chemist' also carry the same implication? Because, uh... I'm .... sorta... yah.

@skullpetrol Unicode character failed to render. Your active browser font doesn't support it.

skull petrol

Thanks @hBy2Py

Btw what does pi have to do with the dragon on your avatar?

Fl.pf.

isnt that a python?

hBy2Py

12:05

@Fl.pf. Yep

@skullpetrol It's meant to evoke the mascot of Python, the programming language

I would've just used the actual mascot, but I didn't want to imply that I was somehow officially affiliated with the language.

So, 'h by 2 pi' should be pretty clear

skull petrol

Interesting.

hBy2Py

the 'py' instead comes from the fact that I'm programming stuff on the side related to quantum chem, in Python.

See here: github.com/bskinn

1,3-feeds

Q: Why was the heroin question put on hold as being a personal medical question?

The question asks for hire to destroy heroin. It doesn't ask for ways to nullify the effects after consumption, or even mentioned human (or any other) biological behaviour in the slightest. I don't see how this question would fit this custom close reason. (What to add to heroin to make it harmles...

discussion specific-question close-reasons closed-questions

Zhe

12:27

@pentavalentcarbon You can probably ask the employer for a slightly delayed start.

mhchem

12:45

@hBy2Py Why did you use \left(? The result looks the same with (.

pentavalentcarbon

13:42

@hBy2Py in reality it is wrong to assume that "freelance scientist" means you're a crackpot, since freelancers are a thing in so many fields, and I am not qualified to comment on it

hBy2Py

@mhchem Habit, possibly a bad one.

But LaTeX focuses on the markup having semantic meaning, so I like to use the \left/\right pairs as frequently as possible, since it (1) ensures I balance my closures and (2) amplifies the semantic content of the groupings.

Fl.pf.

better a \left( too much than too few and you get an ugly equation

hBy2Py

@pentavalentcarbon (That was a joke, more than a criticism, btw...)

pentavalentcarbon

I guess I knew that but worth mentioning because I have conflicting opinions about it

orthocresol

@M.A.R. Yeah. I feel like everybody is tired of discussing it already.

3 hours later…

M.A.R.

16:39

@Fl.pf. A LaTeXer being worried about ugly equation?

Fl.pf.

@M.A.R. are.... are you saying latex equations are ugly by definition???

M.A.R.

LaTeX code is usually

Compared to other code

Fl.pf.

are you talking about the compiled code or the source code?

M.A.R.

Source code. Nice movie BTW.

Fl.pf.

yeah latex source code is horrible..

1 hour later…

Bounty Hunter

18:02

Q: Calculating the electrode potential from thermochemical data

How can I calculate the electrode potential from thermochemical data? My attempt: I know that the electrode potential is dependent on the enthalpies of: atomisation, first ionisation, second ionisation and hydration. So I summed up all to get $\Delta G$ and used the formula $\Delta G=-nFE$,but I...