The Periodic Table

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Gaurang Tandon

02:56

@A.K. Ok, so you mean count of posts with 200 score, count of posts with 199 score, ... count of posts with 1 score, count of posts with 0 score, and then till -100 score...and also the percentage of each such post segment wrt total posts count

cool

i'll try to work it out

Gaurang Tandon

03:33

@A.K. there you go
https://data.stackexchange.com/chemistry/query/1013164/table-of-population-as-a-function-of-post-score

1, 2, and 0 are the most common types of post scores

interestingly more posts get 3,4,5,6 score than they get -1 score

similarly scores 7,8,9,10 are more common than -2

there seems to be good amount of positivity in the score distribution

Avnish Kabaj

03:46

@GaurangTandon Number users which asked a second question after their first one was closed

@GaurangTandon Roomba?

Gaurang Tandon

@AvnishKabaj i'm only counting undeleted posts... So posts deleted by roomba or otherwise are not counted..

@AvnishKabaj nice, will try that one

Meanwhile here is another query: Percentage of closed/deleted questions per month over time

overall closure/deletion rate has slowed down since peaking in late last year and becoming like a plateau for early last year

but too early to say any optimism since march isn't over yet

A.K.

@GaurangTandon I will note that that corresponds somewhat to a slow down in spring cleaning deletions.

Gaurang Tandon

@A.K. oh...

A.K.

04:01

@GaurangTandon very nice [insert: gold star]

Gaurang Tandon

@A.K. :)

@AvnishKabaj don't you think though, that the following two scenarios: 1) my question is closed today and i ask my second question an year later, 2) my question is closed today and i ask my second question within this week, are quite different? They'd be counted as the same in my SQL query. The first scenario depicts the user probably simply forgot about their first question, or that they is an occassional lurker.

The second scenario indicates willingness of users to come back to our site after a bitter experience, which is probably what you're looking for

A.K.

@GaurangTandon the anomalously low value at 34 and anomalously high values at 41, 43 and 50 are interesting.

Gaurang Tandon

@A.K. yeah, I'm finding it hard to see a consistent reasoning about those voting patterns

it is obvious to see that lower scores are more popular, and that their popularity is approx decreasing with increasing score, but this consistency breaks down when we reach scores of range 30 to 50

Avnish Kabaj

04:16

@GaurangTandon That's alright at least I'll get to see a rough estimate

1 hour later…

Hot nitric acid (HNQ)

05:23

Q: Can a stoichiometric mixture of oxygen and methane exist as a liquid at standard pressure and some (low) temperature?

This answer to the question Pre-mixing cryogenic fuels and using only one fuel tank written by a non-chemist (me) begins with: At STP: LOX's boiling point is 90.19 K Methane's freezing point is 90.7 K This does not a priori prove that a solution of the two can not exist. Ho...

2 hours later…

Gaurang Tandon

07:41

@AvnishKabaj cool, i'll try to work it out. also, it's a bit hard :P

6 hours later…

Avnish Kabaj

13:30

Gaurang Tandon

Interestingly, @Martin-マーチン (id 4945) has 2 accepted answers vs 1 total answer in month of April'18 :/

A search on main site reveals only one AC answer

but the query reveals 2 AC answers, and I am not querying deleted posts

Gaurang Tandon

13:55

I'll ask some help on Tavern

hBy2Py

Boo.

PolarBear

Boo

Gaurang Tandon

nvm it was wrong :(

PolarBear

It was wrong :(

Gaurang Tandon

@hBy2Py ?

btw, hey @hBy2Py, been a long time!

hBy2Py

14:01

I have momentarily returned!

<nod>, been caught up several elsewheres.

Martin - マーチン

@GaurangTandon you summoned me... wassup?

Gaurang Tandon

also hey @PolarBear, I think I know who you are

PolarBear

@GaurangTandon Divyanka, iceberry and PolarBear huehue

Gaurang Tandon

@Martin-マーチン hey! i was almost about to assume you were using your mod powers to increase your accepted answer rate :P but then i realized i had fallen prey to inconsistent sql joins :'(

@PolarBear yep, i know

PolarBear

The first time I came in this room, I thought it was for discussions on the periodic table.

Martin - マーチン

14:04

yeah those evil joins...

@PolarBear well, technically speaking, it is

but more of all chemistry

PolarBear

Yeah, I was quite confused for at that time MAR was discussing about gods.

Nevertheless, I am soon going to finish high school in few months like other JEE aspirants and I'll be forever grateful to Chemistry SE and the people here. Thank you.

Martin - マーチン

@PolarBear We're happy it helped :D

Gaurang Tandon

14:51

@PolarBear cannot emphasize this enough. I would have never taken interest in chemistry had this site not been there

Avnish Kabaj

15:24

chemistry.stackexchange.com/questions/tagged/acid

^ acid tag

Accidental creation?

0 questions

orthocresol

15:36

@GaurangTandon Some care is needed when interpreting this. Does this correspond to the number of questions posted within a calendar month that end up being closed/deleted?

If so, then spring cleaning activity has nearly zero effect on this graph, as we never delete recent questions.

Because we've already had a (rather unproductive) meta discussion about a graph that seems similar: chemistry.meta.stackexchange.com/questions/4252/…

Gaurang Tandon

@orthocresol yes, I know about that. And I forked that query into a slightly modified one, to which i linked above.

@orthocresol the dates correspond to when those questions were first posted on this site.

orthocresol

Ok. So this doesn't really have anything to do with spring cleaning.

I think.

Gaurang Tandon

yeah, I think I can agree on that

3 hours later…

YUSUF HASAN

18:18

@orthocresol @Mithoron @M.A.R.ಠ_ಠ @Zhe I have always wondered one thing about the frontier MO theory... When we draw the antibonding orbital to a sigma bond on paper,(say, a C-H bond) then we always draw it antiperiplanar to the original bond. Why is that so? I mean, I can understand it for π MOs where all in phase libes combine to give a bonding orbital,while all out of phase lobes combine to give an antibonding MO.. But cant visualise it for the sigma bond

Also... Since the time seems right.. I would also like to express my gratitude towards Chem.SE which,along with my teacher,has fostered such an interest in chemistry for me that I will be pursuing it after JEE/high school (and not do engineering :P).. You guys teach me every single day.. Thank you!

Zhe

19:00

I don't understand this question

@YUSUFHASAN Also, having the hindsight of a former chemist, are you sure this should be "thanks" :/

2 hours later…

Hot nitric acid (HNQ)

21:03

Q: What exactly color does ozone gas have?

This answer to a now closed question says that ozone gas has a "slight blue" color. But there are lots of blue colors: sky blue, ultramarine, phthalo blue, many others — what is closer to the color of ozone? This page shows photos of ozone solutions in water, like the one below, but this may not...