The Periodic Table

Q: Should fractional units be displayed as fractions or as negative exponents

3:35 AM

@MelanieShebel @ortho I guess if there are enough posts about a particular element, then... okay?

But, not all of the silver questions are about silver. Pretty sure I saw one that was on platinum.

1,3-feeds

The comments in this post discuss this issue, though without a clear conclusion unless I'm missing something. For something as simple as grams per mole for example, there are actually several ways of displaying the units: 1) g/mol 2) $\mathrm{g/mol}$ 3) $\mathrm{g~mol^{-1}}$ 4) $\mathrm{g\do...

Thanks @hBy2Py ;)

@airhuff Welcome welcome!

I tend to do the g mol-1 for inline stuff and use \frac for equations.

My goodness, you've earned rep in a hurry, btw

Thoroughly impressed.

I really appreciate how you've dug around the old questions and answered a bunch

We've needed that done

3:48 AM

Thx...too much time on my hands in the winter!

When I'm writing technical reports, I prefer the ^-1 style

I have Word AutoCorrects set up for ^-, ^1, etc.

In theory I like the look of the inline fractions, but it always ends up (a) cramped looking and (b) disturbing the line spacing on the page.

I see it both ways in edit reviews and am never sure whether to correct it one way or another.

I don't want to just impose my bias.

<nod>

For stylistic stuff, I try to take the route of maximum laziness.

Ha!

71 Revival badges

wow

sounds about right

3:53 AM

I just saw you put up an answer, I'm gonna take a read of it here...

I definitely agree with the conclusion. What made me think of this is a user who is putting in tons of work doing edits lately, but they seem to correct every fraction, units or otherwise, to the \frac format. I've just been leaving his corrections in place. Don't know if I should say anything to them.

If they are pingable in chat, you could ping them here and point them at your meta post, and the one you linked to.

If not, search for a question they've asked, answered, or commented-on; and then comment on it, inviting them to chat.

Uhhh....

:-)

You ping like this: @airhuff

Oh, that's all, I'll try that.

Same syntax in comments

Also, if you want to refer to a specific message someone's posted, hover over that message and click the 'Enter'-looking arrow at the right edge of the post.

@airhuff Like so

The referenced post then gets highlighted when you mouse over the post that does the referencing

and you can click the upside-down Enter-arrow at the left edge of the referencing post to be taken to wherever the referenced post is.

You can reference posts even waaay far back into the chat history.

There are lots of little tidbits of how the tools work, like these.

4:06 AM

What if I put a note in a comment of a question he's reformatted with the @ format to ping him to it or whatever, then delete the comment later? That's how a lot of people have gotten messages to help me.

I have to take off for a bit..great chatting and thx again for the help!

Q: Is sodium chloride really odourless? If yes, what do I smell?

Ok - yeah, I need to get to bed here myself.

@airhuff You can only ping people in comments if they either wrote the question or answer you're commenting on, or if they've also commented on that question/answer.

Also, you can only ping one person per comment.

In chat, people are only pingable if they've posted something in that chat room within ~the last week.

I don't think someone who has only edited a given question or answer is pingable in a comment there

4 hours later…

Bounty Hunter

7:57 AM

I just had to read some general descriptions of sodium chloride and it was always classified as odourless (e.g., by Wikipedia). However, large amounts of table salts (around 1 kg) have a clearly perceptible odour to me. By table salt I mean salt sold for the purpose of cooking – I have not been t...

everyday-chemistry biochemistry smell

3 hours later…

10:49 AM

@hBy2Py They are but you have to manually enter their username afaik. Cc @airhuff

11:25 AM

Hey guys, I need some help in using freqchk utility of gaussian. I followed the instructions by using my chk file that is created after a frequency calculation, and then pick the same values as the temperature I originally used in the frequency calculation (in order to use that as a sanity check, since I should expect all thermodynamic parameters to be identical). However what I got is something weird like this:

Zero-point correction= 0.000000 (Hartree/Particle)
Thermal correction to Energy= 0.002833
Thermal correction to Enthalpy= 0.003777
Thermal correction to Gibbs Free Energy= -0.202143

In addition it seems none of the frequencies were read from the chk, as I get zeros everywhere in the frequency printout

1 hour later…

12:37 PM

Ok nvm, it seems g09's freqchk is unable to read g16 freq calulations

and the computer cluster we are using say module load gaussian will load the latest gaussian version, but it turns out via using module display gaussian, it was found to be loading g09e01

As for why g09 have trouble reading g16 checkpoint files correctly, I have no idea without the source code

2 hours later…

2:26 PM

With great power comes great responsibility, they say. Until you can count your molar masses, maybe you don't need sulfuric acid all that much. — Ivan Neretin yesterday

Loong

heh

pentavalentcarbon

2:55 PM

@M.A.R. yes from me

3:38 PM

hii

Fawad

Hello

can I ask a organic question

Fawad

Yes,if someone can help you,then they will. @TrYiSCheM

okay

the image is not loading

you can click on the image

Fawad

@TrYiSCheM I don't have any idea about that.

3:48 PM

no problem

satyatech

4:17 PM

Hybridisation of pentagonal pyramid structure

Difference on the basis of hybridisation of octahedral and pentagonal Pyramidal structure.

Please tell me if anybody is seeing this (urgent)

pentagonal pyramidial cannot happen unless the central atom is large enough?

IF$_7$ is the typical example

satyatech

Secret it is pentagonal Pyramidal not bipyramidal

But what you first said ,I think it is true.

1 hour later…

5:36 PM

yeah, once you get to 5th period, there's a lot more space to get more geometries

19 review tasks available. Get your badges here

Only because I haven't got to review stuff

Better get going, then.

@Ortho reject pls: chemistry.stackexchange.com/review/suggested-edits/52784

@M.A.R. I'll forward that request to @Loong, since he knows what this is about.

5:49 PM

@orthocresol No, plagiarism is rejectable and I'm sure of it.

Ooh...

I Googled and it's plagiarized

Ok... that changes things..

So I'm worried that it might get approved by rash editors, which is why I'm annoying you to reject it

Yup.

pentavalentcarbon

6:05 PM

Why was inorganic-analysis just created...

Koolman

hey

Ortho's been swinging his mod hammer thingy up and high

@Koolman yeh

Nah, I'll stop now and let you guys handle things.

Koolman

@TrYiSCheM First Cl will be replaced by nitrogen group

after that I think ketonic carbon will convert to alcholic

Koolman

6:35 PM

in JEE Preparation, 6 mins ago, by Yashas Samaga

in the next step

@TrYiSCheM

Loong

7:23 PM

@orthocresol I should know. I am currently preparing a delivery of about 130 tons of enriched uranium. ;-)

Anyway, we also have a meta proposal to replace nuclear and radioactivity.

Yup, I was thinking about that meta proposal. Thought you were the best person to take a look at the edit, but when it's copied from HyperPhysics, oh well.

Loong

Yeah.

@orthocresol Don't worry. We have not placed the order yet. So the uranium is probably still in the form of UF6 somewhere in Pierrelatte.

8:10 PM

@Loong That's very reassuring.

2 hours later…