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4:58 AM
@PH13 ಠ_ಠ
 
 
8 hours later…
12:29 PM
@Freddy we have planned not to chat here when you're expected to come.
 
so nice of you :D @inɒzɘmɒЯ.A.M
 
​ ಠ_ಠ
 
0
Q: How could a rechargeable battery recharge itself?

jumana haimourI'm an engineering student preparing for my graduation, in one step of my graduation project I used a rechargeable battery(1.2 volt), i was shocked when this battery is starting to recharge it self until it reach 1.04 volt (not fully) for many many cycles and immediately when the voltmeter reads ...

 
@Freddy With the power of the divine.
I don't really know if these questions are really .
So I won't judge its on-topicity.
 
 
4 hours later…
4:28 PM
Hullo @Cardinal! Welcome to the Periodic Table!
 
ron
4:42 PM
@inɒzɘmɒЯ.A.M Hi RAM! Say I like your new avatar, but I think you'd look even better with a continuous loop of double bonds around the periphery. Wonder if you'd be aromatic or antiaromatic? What's the temperature out you way? I was reading that it hit 73°C in some spots!
 
@ron Tabriz is one of the coolest cities of Iran.
Literally.
Hullo, BTW!
 
ron
So are you below 40°C? What's your elevation?
 
It was some 38 degrees I reckon.
Or less.
I'll know it when my carbons are boiling.
 
ron
Yes, when your chiral cousins start to racemize.
 
ron
4:48 PM
Has there been any discussion here lately about the site, specifically the quantity and quality of questions? To me it seems much different from last summer.
 
You mean the questions are of less quality?
 
ron
yes
 
That's because our site is bigger.
Compare: Stack Overflow
All they get everyday is crap.
 
ron
Even though the site is bigger, why should the absolute number of "good" questions decrease?
 
Sure, outta 9000 Qs they get everyday, 100 are nice.
You may put up a meta discussion.
6
Q: Analytical solution of the Schrödinger Equation for AB^+ systems

PH13According to Wikipedia, there are not many problems for which the Schrödinger equation can be solved analytically. [1] The $\ce{H2+}$ ion is probably the most complex molecule that can be treated this way. As far as I know, every diatomic homonuclear system like this can be solved, e.g., $\ce{U2...

@ron this is from yesterday.
 
ron
4:54 PM
So you see things as reasonably normal?
 
I wasn't here last summer.
But that partially explains it.
Compare how many questions per day we get now.
 
ron
I did post on this subject in meta back in Nov. meta.chemistry.stackexchange.com/questions/555/…
 
I did see it.
The reasoning has to be different now.
 
ron
I guess time will tell.
 
5:00 PM
o/
 
@inɒzɘmɒЯ.A.M now is my question good or bad? :O
 
It's terrible. ಠ_ಠ
 
:C then I will have to delete it
 
You can't.
 
5:03 PM
flag for it
vlq
 
Its quality isn't very low.
 
good day, gentlemen
 
It's reaching minus 25.
 
heyho
 
@ToddMinehardt \o
 
5:04 PM
how goes it?
 
forward
 
EMPEROR @ron is here.
 
hi @ron, nice to meet you
 
ron
@ToddMinehardt Nice to meet you too! I see you've been active on the site, nice work!
 
i have a procedural SE question for you guys: is the answer here chemistry.stackexchange.com/questions/34384/… that came after mine an obvious plagarism? of so, what's the procedure for dealing with it?
@ron i can only hope to achieve your presence one day - are you a practicing chemist?
 
5:06 PM
I like to read @ron 's answers
 
the site is great, and yes, @ron's answers are fantastic - i'm not very good with organic chem, so i'm learning a ton from those posts
i take it you're an organic chemist @ron?
 
ron
Yes, organic
 
@ToddMinehardt you mean the answer by muzammil?
 
yes @PH13 -
 
Plagiarized from where?
 
5:08 PM
how do you know it's plagiarism?
 
are you stateside @ron? i am in austin, texas - i was a theoretical guy
sorry, plagarised from my answer
it's a repeat
it's just a longer explanation of what i answered with.
 
ron
@ToddMinehardt Yes the western half
 
@ToddMinehardt No.
 
very nice, i was at UCSF for a year as a postdoc way back when, if you're out that way
@inɒzɘmɒЯ.A.M - okay, just checking
lot of homework today
 
Hi, guys!
 
5:11 PM
hi @Mithoron
 
@ToddMinehardt the last few days were full of it
hello o/
 
yes, lots of bad stuff
i see you guys were talking about that earlier in this thread
 
@PH13 o/
 
@Mithoron Hullo!
 
proper state of matter description is $\ce{NaCl~(aq)}$ or $\ce{NaCl(aq)}$?
 
5:13 PM
@ToddMinehardt Your answer may have just given them means of how to write an answer, but when it's not precisely your words, it's not plagiarism.
 
@inɒzɘmɒЯ.A.M that's not absolutely true, but most parts
 
@PH13 Hmm?
 
@inɒzɘmɒЯ.A.M - understood. Plagiarism was/is the wrong word. More along the lines of a duplicate answer. But we'll let the masses decide.
 
to just reformulate someone else's answer is also plagiarism
 
@PH13 It should be $\ce{Nacl \qquad \qquad \qquad (aq)}$.
 
5:15 PM
@PH13 - loved the state of matter one.
 
@inɒzɘmɒЯ.A.M small c, ok
no ... is there a fixed space or not?
 
@PH13 You mean?
 
i always use a \, between for breaks
 
space not break ...
ok
@ToddMinehardt what does it?
 
@PH13 Space.
 
5:17 PM
it's just a small space between characters, and \; is a slightly larger one - maybe sandbox it, you'll see
 
correct
 
I always use the ~ to do them
 
Example : $\ce{NaCl}\,(s)$
 
Or you could do \mbox{}. It gives$\mbox{}$this much space.
 
5:18 PM
1
Q: Do aromatic dienes undergo Diels Alder reaction?

Aritra DasDo aromatic dienes undergo Diels Alder reactions? My understanding is that the $\pi$ bonds in aromatic compounds are not as localised as they are in other compounds, such as aliphatic dienes. Therefore, the dienophile shouldn't be as willing to go to these compounds. Am I correct?

 
now the question is how to turn off mathjax here ... xD
aromatic one don't afaik
 
@PH13 Swallow five sheets of paper near you.
Then, drink five glasses of water.
 
@inɒzɘmɒЯ.A.M do I have to shout something after that?
 
@ron Nice answer :)
 
Then, eat five big cubes of ice.
With toast.
 
5:20 PM
the \, is 1/6 of a quad, \; is 5/18 of a quad, \> is 2/9 of a quad
 
ron
@Mithoron Thanks, still looking for some figures to include
 
@inɒzɘmɒЯ.A.M That didn't work!
 
Then, shout out Happy thanksgiving!
Then, realize you've been pranked.
 
@inɒzɘmɒЯ.A.M with toast and ice and water in mouth?
 
@PH13 Yes.
 
@Loong Does that have mhchem?
 
@ron Example with destabilized aromatic system would be cool :)
 
@inɒzɘmɒЯ.A.M apparently not :-(
 
I knew it.
 
ron
@Mithoron tris-cyclopropabenzene is an example, but can't find any drawings
 
5:24 PM
$$\ce{Hahaha!~You~haz~no~mhchem!}$$
 
@ron is it hard to draw?
 
ron
no...last resort
 
@PH13 IUPAC Green Book and Red Book have no space.
 
hi @Loong, i don't think we've met. pleasure to meet you!
 
5:26 PM
@ToddMinehardt Hey!
 
@Loong then don't accept the edit
 
@ToddMinehardt You just made two friends.
Repeat the steps above.
@PH13 No, he has to alternatively accept and edit.
It usually doesn't make sense to reject a good edit because of minutiae.
 
there is nothing really more ... just the chloride that was no chloride ... more important
 
i wonder what happened to that guy was chewing on batteries...
 
@PH13 The mchem manual also says \ce{H2(aq)}
 
5:30 PM
The batteries were killed @Todd.
 
@Loong The force is strong with you
 
He went on sobbing.
 
haha @inɒzɘmɒЯ.A.M
oh boy, didn't see that....
at least they were mercury-free, according to the picture he posted...
 
@ToddMinehardt I hope he doesn't have any amalgam fillings.
 
5:36 PM
now 1 more downvote for 1337 points ... which one do I choose
 
Downvote your own question.
So that you won't reach 1337.
 
hey, are you going to migrate the household ammonia on plants question? chemistry.stackexchange.com/questions/34599/…
otherwise i'll answer it - the OP asked for migration in a comment thread, though
 
You can flag it for migration. The rest is @Martin et al's job. — inɒzɘmɒЯ.A.M 17 secs ago
 
k
for that flagging, do i use the 'close' or 'in need of moderator attention' ?
 
Custom-flag.
Please migrate this masterpiece [sic] to bio.SE.
 
5:44 PM
ok
 
@ToddMinehardt In principle, you can select “Close -> off-topic because... -> This question belongs on another site in the Stack Exchange network” but since you are not a moderator, this will only show meta.chemistry.stackexchange
 
0
Q: finding average life of radioactive nucleide that undergoes parallel reaction when decay constants are given

Aditya DevFind the average life of a radio nuclide which decays by parallel paths $$A\rightarrow B$$ $$2A\rightarrow B$$ Where decay constant for first reaction is $\lambda_1=0.018$ and $\lambda_2=0.001$ per second. Attempt: I used the formula $$\frac{1}{t}=\frac{t_1t_2}{t_1+t_2}$$ where $t$ represents t...

do you know an example for such a reaction?
 
@inɒzɘmɒЯ.A.M - yes, i've gotten that far before and stopped...i'll just use a custom flag as you suggest
 
@PH13 We have @Nicolau for that.
 
@PH13 i was puzzled by that post, but then i'm no expert...
 
5:48 PM
No way, Loong is the master of radioactivity
 
@PH13 Do you mean $2A\rightarrow B$?
 
just that you have the same reactants and products, only stoichiometry varies, and the decay constants appear to be non-linear - is this something that occurs?
 
@Loong doesn't it say that there is a reaction that undergoes $\ce{A -> B}$ AND $\ce{2A -> B?}$?
 
yeah, like saying potassium-40 to argon and 2(potassium-40) to argon but different rates
 
so the B in both decay reactions are different isotopes of B?
 
5:53 PM
i suppose intermediate products we're not seeing in the reactions given account for it, come to think of it
 
I mean otherwise it could simply be a "mechanism" for homework questions to show the math behind those thoughts
 
i read it as A -> B one way, and 2A -> B another way
yeah @PH13 that could be it
 
This is probably just a generic calculation example.
 
@ToddMinehardt that sounds good but this was my point why I asked if someone possible knows an example ^^
yeah ... let's conclude that
 
6:23 PM
is the solution $$t_{1/2} = \frac{2}{2 \lambda_1+[A]_0 \lambda_2}$$ ?
again @LucasKauffman is stalking us suspiciously o/
 
ron
@Mithoron @Mithoron Finally wound up using DA of [2.2]paracyclophane as the example.
 
@ToddMinehardt what is a quad?
 
a quad is the width of a character in whatever font you're using - so in a 10 pt font, a quad is 10 points
 
ok
 
Das Geviert (englisch quad) ist eine typografische Maßeinheit aus der Zeit des Bleisatzes mit beweglichen Lettern, die auch im modernen Satz am Rechner noch verwendet wird. Das Geviert entspricht einer quadratischen (daher der Name „Geviert“, eine veraltete Form für Quadrat) nicht druckenden Fläche, deren Breite (Dickte) gleich der Höhe des Schriftkegels (der Kegelstärke) ist. Demzufolge definiert das Geviert in der Senkrechten den Mindestzeilenabstand einer Schrift (Kompress-Satz); in der Waagrechten ist es – in verschiedenen Unterteilungen bis zu einem 24stel – die Maßgrundlage für den Abstand…
 
6:32 PM
@ron Oh, thought about cyclophanes in this case - much popular :)
 
@Loong thx
 
@ron There' one bond too much in this pic. :(
 
ron
@Mithoron Thanks! I'll fix it.
 
@ToddMinehardt thank you, too
 
@PH13 no problem, love talking typography
 
6:38 PM
it's like with -, --, --- etc.
 
exactly
 
@PH13 And qquad is like four quads.
"Quadruple quad"
 
thanks for this aha moment
 
You're welgone.
 
\qquad is a double quad - quoting The TeXbook
 
6:40 PM
Double quad? O.O
 
page 166
 
@ron do you use ChemSketch?
 
Quad quad!
 
Hi people
 
that's what Donald Knuth has written, thus it is true
hi @Muzammil
 
6:41 PM
@PH13 ChemSketch uses @Ron.
 
o/ @Muzammil
 
@Muzammil \o
 
ron
@PH13 Yes i do.
 
^^
 
@ToddMinehardt I need to buy those.
 
6:41 PM
@ron why u no use Anti Aliasing? :O
 
it's a great investment - i am on my second copy (of The TeXbook)
 
sorry to buzz in during your other conversation .. so anyone wanna take a look at this question ..
0
Q: Calculating Molar Volume from crystal volume

MuzammilI am trying to calculate molar volume of certain crystal lattices to be used for crystal growth kinetics calculations. The information I have is the crystal volume & crystal lattices. For example the crystal $\ce{Cu41Sn11}$ has the structure cF416 and the information taken from a certain crystal ...

 
ron
@PH13 don't know about it, do you have a link?
 
@ron let's see
 
@Muzammil I dunno if anyone here is a crystallography guru.
 
ron
6:46 PM
@PH13 Thanks, I checked the box.
 
great, should make structures more beautiful
 
ron
@PH13 It looks better in ChemSketch, so I saved it and replaced one of the drawings in my answer, but it still looked bad onChem SE!?
 
which image was replaced?
 
ron
It looked the same as the former o-benzyne drawing, no image improvement even though it looked better in CSketch
 
6:51 PM
does the saved image looks better on your pc?
 
ron
yes
yes, in ChemSketch
Not in Chem SE
 
hm ... have to investigeate on that later
now I'm a little afk ... I will ping you
 
@ron Also you should avoid using jpg because of the compression artifacts. For such structure drawings, png is better.
 
yes ... always png
it's a little bit bigger, but it's better
 
ron
@Loong Thanks for the tip, I'll use png from here on out
 
6:57 PM
maybe imgur converts jpg to png badly?
tried to upload beautiful png version?
 
This is ChemDraw, saved as png.
 
cu later
 
@PH13 cu
 
cheers
 
ron
@Loong just resaved the figure as png and edited into my post - no improvement .
 
7:00 PM
@ron Did you check the saved file with a viewer on your computer before upload?
 
ron
No, I just looked at it in ChemSketch
Still looks bad in a viewer
 
@ron Ok, the compression artifacts are gone in the png version. But the antialiasing is still missing.
 
ron
@Loong anti-aliasing is still selected in CSketch
 
@ron Sometimes imgur deletes specific information outta images.
How does it exactly look in ChemSketch and in chem.SE?
(Screenshots plz)
 
@ron I just tried with ChemSketch and I can reproduce your problem.
 
7:08 PM
@PH13 \o
 
@LucasKauffman \o
 
How're you doing?
 
hi @LucasKauffman
 
good good yourself?
I just received my report for my may exams and they were all good
too bad I wont have a free summer :'(
 
7:14 PM
You can say that again.
 
I know a chemistry joke
 
Me too.
But my sense of humor has finished now. I spent it in another chatroom.
 
two guys walk in the bar, the first one buys H two O, the second guy says, for me H two O too, the second one died
 
@inɒzɘmɒЯ.A.M ChemSketch screenshot:
ChemSketch saved as png:
 
ron
@Loong I fixed the graphic. I had rotated the benzene ring in my earlier drawing, I flipped it instead in this later version. Rotation was the source of the problem.
 
7:17 PM
 
I see.
Can you save it as JPEG?
 
@inɒzɘmɒЯ.A.M ChemSketch saved as jpg (don't do this!):
 
This is weird.
It's either a bug in ChemSketch, or the format don't allow some image info in .png and .jpeg.
Lemme check with Damkerng.
 
@inɒzɘmɒЯ.A.M apparently, ChemSketch uses antialiasing only for the screen but not for file export.
 
Huh.
Then just use a screenshot.
 
7:24 PM
@inɒzɘmɒЯ.A.M I just use ChemDraw. ;-)
 
I use chem.SE.
 
7:46 PM
ChemSketch is weird ...
@LucasKauffman this is no good one ;D
 
ron
@inɒzɘmɒЯ.A.M So whaddya think, are you going to be saturated or unsaturated? Do you see what happens in 2.2.2.2 fenestrane if the periphery is unsaturated and the central carbon is planar/non-planar?
 
@ron I've just recently changed this.
I'll wait for @PH13 to get used to it, and then change it in an ironic mood.
 
it's possible to save the ChemSketch images with relatively high resolution and then resize them afterwards
the downsizing somehow works as AA ;)
or make screenshots and save them ... xD
@ron @Loong @inɒzɘmɒЯ.A.M
 
I'm not doodling anything recently.
 
@PH13 I only use ChemSketch if I need a second opinion on “convert structure to name” since my version of ChemDraw doesn’t have the latest IUPAC rules.
 
7:59 PM
yeah, that's a good reason ^^
 
@Loong The 2014 rules?
 
but ChemSketch draws better "delocalized" bonds than ChemDraw
 
I heard there are very important changes.
 
@inɒzɘmɒЯ.A.M For example, I experienced the changes here:
1
A: IUPAC naming - choosing the main branch doubts

LoongFor the given structure, the principal chain could be a 3-hydroxyhexanoic acid or a 3-methylhexanoic acid; i.e. the name of the structure could be 3-hydroxy-2-(pentan-2-yl)hexanoic acid or 2-(1-hydroxybutyl)-3-methylhexanoic acid. The IUPAC recommendations on this matter have been changed. Ac...

my ChemDraw 2012 calls it "3-hydroxy-2-(pentan-2-yl)hexanoic acid".
 
@Loong Oh!
Is that the only important and very visible change? (Priority of chains over unsaturation)?
 
8:07 PM
the current version of ChemSketch has the new preferred name "2-(1-hydroxybutyl)-3-methylhexanoic acid"
@inɒzɘmɒЯ.A.M I have not checked all changes. There is a special chapter in the Blue Book that summarizes most changes.
 
@Loong that you own digitally, right?
 
But I can't buy it. :(
I HATE YOU IUPAC. ლ(ಠ益ಠლ)
 
@PH13 yes, I have a pdf
 
that makes you my iupac encyclopedia
 
@Loong And you bought it for 525 USDs?
 
8:12 PM
@inɒzɘmɒЯ.A.M this is your house?
 
@PH13 I got a bronze badge for nomenclature just for copy/paste answers from the book.
 
@PH13 Yes. I'm supposed to be "asleep".
 
@inɒzɘmɒЯ.A.M I did not pay myself. I don't know how much it was.
 
@Loong I guess no one else has or wants access to those iupac rules xD
 
@PH13 If no one else has it, I can just make up my own rules!
 
8:16 PM
@Loong I miss the evil laughter
@inɒzɘmɒЯ.A.M why? it's not that late over there
 
@PH13 Not later than 1 a.m.
But that wasn't what I meant.
The image you linked to is kinda a cemetry.
 
@inɒzɘmɒЯ.A.M somewhat around 00:48
@inɒzɘmɒЯ.A.M ok ... didn't look too close :D
I didn't want to offend you, if I did :O
 

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