The Periodic Table

hBy2Py

02:59

@pentavalentcarbon Pretty much. They tend to be poor questions for a SE site. Either RTFM, or questions that are either too broad or opinion-based. (@M.A.R.)

"What is the best functional to use?"

"When should I use MP2 instead of DFT?"

"When should I use coupled cluster instead of MP2?"

"When should I use multireference methods?"

Answer to all? "It depends."

(A lot. On a lot of things.)

pentavalentcarbon

03:33

@hBy2Py Actually, I think most of those are fine...I think the few questions we get are mostly technical questions solved by reading the manual.

People are fantastically bad at reading manuals.

I know reading is a pain, but come on! The time investment is worth it. Think about how much time you take before running an experiment...it's the same thing, and people want to think that it isn't.

satyatech

05:54

Alkene + peracetic acid =???

Loong

@satyatech epoxide

Leonhard Euler

06:13

Hello @Loong

Loong

@LeonhardEuler hi

satyatech

@Loong thanks

If there are dienes at which double bond will epoxidation happen?

@Loong

@LeonhardEuler

Hey Loong you here?

M.A.R.

08:07

I'm gonna punch the next person that says "According to me"

Leonhard Euler

@Loong, How are you?

M.A.R.

Hey Euler. I thought you were dead.

Leonhard Euler

@M.A.R., Oh really n

M.A.R.

!!wiki/Euler

Chemobot

Leonhard Euler

Leonhard Euler (/ˈɔɪlər/ OY-lər; Swiss Standard German: [ˈɔɪlər]; German Standard German: [ˈɔʏlɐ]; 15 April 1707 – 18 September 1783) was a Swiss mathematician, physicist, astronomer, logician and engineer who made important and influential discoveries in many branches of mathematics like infinitesimal calculus and graph theory while also making pioneering contributions to several branches such as topology and analytic number theory. He also introduced much of the modern mathematical terminology and notation, particularly for mathematical analysis, such as the notion of a mathematical function...

M.A.R.

08:16

Wikipedia says you're dead too.

Long dead.

Leonhard Euler

@M.A.R., how would you define slaked lime?

M.A.R.

@LeonhardEuler Easily

Leonhard Euler

@M.A.R., ??

M.A.R.

You're asking how I can define slaked lime. I can define slaked lime easily

BRB

Leonhard Euler

@M.A.R., I am asking the definition

M.A.R.

08:24

@LeonhardEuler It's the traditional name of calcium hydroxide

I know you were asking the definition BTW. I was just kidding

!!wiki/Slaked Lime

Chemobot

Calcium hydroxide

Calcium hydroxide, traditionally called slaked lime, is an inorganic compound with the chemical formula Ca(OH)2. It is a colorless crystal or white powder and is obtained when calcium oxide (called lime or quicklime) is mixed, or "slaked" with water. It has many names including hydrated lime, caustic lime, builders' lime, slack lime, cal, or pickling lime. Calcium hydroxide is used in many applications, including food preparation. Limewater is the common name for a saturated solution of calcium hydroxide. == Properties == Calcium hydroxide is relatively insoluble in water, with a solubility product...

M.A.R.

Ta da

Leonhard Euler

@M.A.R., what would be the more standard definition?

M.A.R.

@LeonhardEuler What do you mean?

You mean like a Goldbook definition or something?

Leonhard Euler

@M.A.R., is that only the traditional name for calcium hydroxide.or some other definition is there?

M.A.R.

08:30

@LeonhardEuler "Slaked lime" doesn't stand for anything else. Why should it?

If I understood you correctly though, there's also "hydrated lime".

Which is calcium hydroxide.

Leonhard Euler

@M.A.R., what is lime water?

M.A.R.

!!wiki/Limewater

Chemobot

Limewater

Limewater is the common name for a diluted solution of calcium hydroxide. Calcium hydroxide, Ca(OH)2, is sparsely soluble in water (1.5 g/L at 25 °C). Pure limewater is clear and colorless, with a slight earthy smell and an alkaline bitter taste of calcium hydroxide. The term lime refers to the alkaline mineral, and is unrelated to the acidic fruit. Limewater is prepared by stirring calcium hydroxide in pure water and filtering off the excess undissolved Ca(OH)2. When excess calcium hydroxide is added to limewater, a suspension of calcium hydroxide particles results, giving it a milky aspect, in...

Leonhard Euler

What is the molecular formula for lime [email protected].

M.A.R.

Ca(OH)2.some water molecules

It's different from the normal calcium hydroxide because calcium and hydroxide ions are solvated.

It's not a lattice of calcium and hydroxide ions.

!!wiki/solvation

Chemobot

08:35

Solvation

Solvation, also sometimes called dissolution, is the process of attraction and association of molecules of a solvent with molecules or ions of a solute. As the molecules or ions dissolve in a solvent they spread out and become surrounded by solvent molecules, forming a solvate complex. Solvation is the process of surrounding solute with solvent. It involves evening out a concentration gradient and evenly distributing the solute within the solvent. == Distinction between solvation, dissolution and solubility == By an IUPAC definition, solvation is an interaction of a solute with the solvent, which...

Leonhard Euler

@M.A.R., what is the working principle of fire extinguisher?

M.A.R.

@LeonhardEuler Are you in the middle of an exam?

Leonhard Euler

@M.A.R., No . Why?

M.A.R.

@LeonhardEuler You realize typing the same questions into Google will give you answers?

Leonhard Euler

@M.A.R., I didn't find the principle for fire extinguisher

M.A.R.

08:43

google.com/…

M.A.R.

12:20

!!flip/@Ortho

Chemobot

(۶ૈ‡▼益▼)۶@Oɹʇɥo

orthocresol

Why does Chemobot's message ping me?

Aren't those different characters.. o.o

M.A.R.

It pings you?

O.O

!!flip/@Ortho

Chemobot

◟(`ﮧ´ ◟ )@Oɹʇɥo

M.A.R.

O.O

@orthocresol Should I go ask on meta.SE? Can you confirm it pinged you?

M.A.R.

12:35

@Oɹʇ

Yep, it pings.

0

Q: Why does @Oɹʇɥo ping @Ortho?

My understanding was that if the first three characters of a name match a username present in the chat for the previous seven days, the person will be pinged. Out of curiosity, why does @Oɹʇ ping @Ortho? Aren't they different characters? This seems to only happen in @Ortho's case. Flipping @S...

CC @Ortho

!!flip/@Tunaki

Chemobot

(۶ૈ‡▼益▼)۶@⊥nuɐʞᴉ

Loong

!!flip/@M.A.R.

Chemobot

(╯°ਊ°)╯︵@W˙Ɐ˙ᴚ˙

M.A.R.

!!doubleflip/@Loong

Chemobot

ƃuooꞀ@╰(ﾟxﾟ)╯@Ꞁoouƃ

Loong

12:50

!!flip/ @W˙Ɐ˙ᴚ˙

Chemobot

(۶ૈ‡▼益▼)۶ @M.A.R.

M.A.R.

!!flip/(۶ૈ‡▼益▼)۶

Chemobot

(╯°ਊ°)╯︵)۶ૈ‡▼益▼(۶

M.A.R.

@Chemobot This is what we call an unflippable function in math

manshu

13:59

!!flip/me

Chemobot

( つ•̀ω•́)つɯǝ

Shadow Wizard

14:13

@M.A.R. boo

!!flip/!!flip/!!flip/

Chemobot

( つ•̀ω•́)つ¡¡ɟꞁᴉd/¡¡ɟꞁᴉd/

Shadow Wizard

!!help

Chemobot

Hi! I'm the almighty bot of ChemistrySE's main chatroom. /!\ If you find me annoying, you can ignore me by clicking on my profile image and chosing "ignore this user" /!\ You can find my documentation here.

Shadow Wizard

!!greet/@M.A.R.

Chemobot

Welcome to The Periodic Table @M.A.R.! 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!

Shadow Wizard

14:24

hehe

!!!flip/will this really be deleted?

coool

Leonhard Euler

15:25

Hello @Chemobot

orthocresol

15:51

@M.A.R. Goodness, I got so many pings..

pentavalentcarbon

16:05

Don't pings make you feel more important though?

orthocresol

I'm important enough to warrant a meta.SE post, that's enough for my ego.

pentavalentcarbon

I hope you have sound turned off in the browser

I really find that noise irritating with how loud it is compared to the system alert noise

All these websites do notifications differently, some browsers don't forward them to Notification Center...

orthocresol

I wasn't in chat at the moment, so that was OK...

pentavalentcarbon

THUNK THUNK THUNK THUNK

orthocresol

17

Q: Audio slider for chat pings

Would it be possible to have a slider to control the volume of the chat pings? I know I could use the Volume Mixer on Windows to lower my web browsers volume but then that affects everything (such as youtube, twitch, etc) which is troublesome. Since the volume icon is already used to set whe...

feature-request chat audio

Maybe this might help?

I've never understood Notification Centre.

It does seem to be different for each website afaik...

pentavalentcarbon

16:22

Neat. But since even muted SE chat sends out notifications that Firefox recognizes, and Firefox properly sends notifications to Notification Center I get the little box with a "Pop" sound since that's what I changed my alert to.

someone ping me

orthocresol

!!flip/@pentavalentcarbon

Chemobot

(۶ૈ‡▼益▼)۶@dǝuʇɐʌɐꞁǝuʇɔɐɹqou

pentavalentcarbon

Chrome uses their own notification system because Chrome is bad

/fin

orthocresol

What browser are you using?

pentavalentcarbon

Oh, that's Firefox Nightly, that's why the icon is different.

Regular Firefox would look the same but with the normal icon/logo.

I might switch it to Alerts so it stays on the screen until I dismiss it.

Hm, I don't see normal Firefox in this list...

orthocresol

17:13

Hmm, never heard of that before.

M.A.R.

18:16

Welcome back @Sha

M.A.R.

19:06

I saw 'IMF' and I thought 'Intergalactic Magnetic Force'?

Hexacoordinate-C

I sent a question to support to make the contrast better when a question of someone has one of our favourite tags. Because in MSE the contrast is obvious but here it is almost non existing.

Loong

@Hexacoordinate-C Do you mean the yellow background?

M.A.R.

19:29

@Hexacoordinate-C We should make the question blink and fly all over the page

Hexacoordinate-C

20:21

@Loong yes @M.A.R. I don't understand what you mean

Look in CSE :

And in MSE :

I would like the same for us because my eyes get some troubles in CSE lol

M.A.R.

Well, post an FR on our meta

I won't oppose it

Hexacoordinate-C

An FR ?

M.A.R.

@Hexacoordinate-C Feature Request

A meta post

Hexacoordinate-C

OK I will

M.A.R.

OK you will

Hexacoordinate-C

20:40

0

Q: Can we change the contrast of questions which have at least one of our favourite tags?

My question is just simple and that is only common sense for me, we can choose favourite tags and I think the goal is to rise the questions we can answer, at least, and the questions which can interest us more than other in another part. So, just to make a simple comparison, the contrast of col...

feature-request

I hope my english is good ^^

And the question well asked

Thank you @M.A.R. for the EDIT

M.A.R.

@Hexacoordinate-C MSE can stand for Math.SE, Meta.SE, Math Educators.SE etc. So can CSE

So I'd choose clarity over brevity

Hexacoordinate-C

I didn't know there where other possibilities

try

try

M.A.R.

try

Hexacoordinate-C

try

How did you do ?

1,3-feeds

1

Q: Can we change the contrast of questions which have at least one of our favourite tags?

My question is just simple and that is only common sense for me, we can choose favourite tags and I think the goal is to rise the questions we can answer, at least, and the questions which can interest us more than other in another part. So, just to make a simple comparison, the contrast of col...

feature-request design favorites

M.A.R.

20:46

@Hexacoordinate-C Backticks

`

Hexacoordinate-C

Is there a page with every possibilities ? I need to improve that. I'm here for more than a year and I have a lack of knowledge about that

Oh I have no backtick in my keyboard

'try'

M.A.R.

@Hexacoordinate-C It should be beside 1

@Hexacoordinate-C That's single quotes, not backticks

@Hexacoordinate-C I learned it by hanging out here. There's a chatroom called Sandbox you can test it in

Hexacoordinate-C

try

I saw it haha

beside 7 ^^

M.A.R.

\o/

@Hexacoordinate-C Well, keyboards are different

Hexacoordinate-C

Yes there are ! ^^ But I had never seen it on my keyboard

M.A.R.

20:51

It can also format code on the main site

Hexacoordinate-C

And can you explain me how to share a link and give it another mane

M.A.R.

If you have large chunks of code, you can format them by entering a few spaces in the beginning and using shift+enter to create a new line.

@Hexacoordinate-C [this is the alt text of the link](http://the link is here)

Hexacoordinate-C

FR

Thank you ! :)

M.A.R.

You got it!

It also works that way on the main site

Hexacoordinate-C

Sometime I wanted to do it in comment but I didn't remember how so I didn't haha

M.A.R.

20:54

Also, some links one-box in chat, meaning, if they're the only thing in a chat message, automatically turn into something else

http://chemistry.stackexchange.com/questions/69881/how-to-extract-carbon-from-w‌ood becomes

0

Q: How to extract carbon from wood

Basically remove oxygen, it does not matter if it's less pure with some minerals, but would be preferable to have pure carbon 90 % + .

organic-chemistry

That.

Hexacoordinate-C

try

I can also make linear combinaisons :P

*try*

Oh this one doesn't work

M.A.R.

@Hexacoordinate-C The special font in this message is called fixed font. Fixed font is for code, and it doesn't render because code shouldn't render

Hexacoordinate-C

I see

I remember when I put some BBcode in PHP for a website project i'm doing. I use [code][/code] instead of `

M.A.R.

@Hexacoordinate-C Backticks is the markdown way. It doesn't need to be the only way

Hexacoordinate-C

I have the habit of BBcode in other forums

M.A.R.

21:01

On SO, the backticks are for inline code, and <pre> and <code> for large bits of code

pentavalentcarbon

21:30

finally, first gold badge

and the second will come in 12 days

Hexacoordinate-C

21:48

I forgot to connect me one day before to get the gold badge for 100d connections

So I do it again I hope this time I won't forget lol

pentavalentcarbon

I was pretty pissed when I forgot with maybe 4 days to go

one thing that threw me off was the site keeps track in UTC, which I didn't know about

so I set a reminder on my phone to go off daily that just says "Visit Chemistry.SE"

Hexacoordinate-C

Ahah our lifes depend on that website during 100 days

pentavalentcarbon

I know, it's even worse when you get busy and don't have lots of time

I am also convinced that the badge for meta is impossible to get because it is always resetting for me every few days even though I would go there as well

but I have more important things to do than that

against better judgement I have started writing an answer to one of the most popular unanswered computational chemistry questions on the site, unsure how long it will take

Bounty Hunter

22:30

7

Q: How to Calculate Transition Dipole Moment from Two Known Wavefunctions

I am interested in calculating the transition dipole moment (TDM) from the information from two wavefunctions of different states. This is somewhat similar to calculating the molecular dipole moment which was previously answered here: How to calculate molecular dipole moment from a known wavefun...

quantum-chemistry computational-chemistry theoretical-chemistry dipole td-dft

pentavalentcarbon

@BountyHunter NOOOOOOOOOOO fine I will do that one first

2

M.A.R.

22:44

@pentavalentcarbon \o/

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