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Jan16-12 Greg Bernhardt
chemical, latex, typeset Sticky Thread Pinned: Chemical LaTeX typeset ( 1 2 3 ... Last)
Physicsforums now has a very cool feature, which enables complex typesetting for formulas or equations! A tutorial...
Jul7-13 04:53 PM
jackmell
64 155,313
chemistry, websites Sticky Thread Pinned: Good chemistry websites ( 1 2 3 ... Last)
I think that these links can be interesting: PeriodicTable: http://www.webelements.com/...
May7-14 10:06 PM
Awheezi
115 147,619
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 41,110
Why is it that change in enthalpy (h=e + pv) depends upon pressure as they say, we should measure at standard...
Nov24-10 07:44 AM
Zeppos10
32 9,838
what is the best formula for elephants toothpaste not using yeast using potassium iodine and hydrogen-peroxide(30%)...
Nov18-10 03:12 PM
Borek
3 2,261
When water is boiled, and the dissolved oxygen that was in the water escapes, why does this raise the entropy of the...
Nov26-10 12:26 AM
igurmendez
15 4,015
This may seem like an odd forum for this question but I couldn't find an answer anywhere else. Why is it always...
Nov18-10 12:17 PM
Studiot
5 2,997
This might be a stupid question, but it has me kind of confused. In diffusion, molecules will flow from high...
Nov21-10 08:49 AM
Borek
6 1,066
Is it true that the Forces between particles determined as follows: 1)Molar mass 2)Polarity 3)Surface area ? ...
Nov23-10 08:06 AM
omni
2 3,149
Hi all, For a while now I have been searching for an electrically conductive material which is also UV transparent....
Nov22-10 01:56 AM
DrDu
2 2,399
Why do some atoms bind with other atoms of their own elements, such as O2 and N2, and why do others not? What property...
Nov19-10 10:08 AM
DrDu
12 6,051
I got some concentrated H2SO4 on my lab coat on monday and when I left the lab there was only a brown stain on the lab...
Nov22-10 03:31 PM
chemisttree
7 4,040
When looking at the ABA and ABC arangments I was wondering if an ABA arrangement can switch to a ABC arrangement in...
Nov19-10 01:57 AM
DrDu
2 1,560
So for an experiment I must make ethanol from sugar using yeast. I've read that yeast dies at around 13%...
Nov19-10 02:41 AM
Borek
2 1,515
Can react with other atoms of their element and form diatomic molecules, while others cannot?
Nov19-10 11:24 AM
Borek
3 2,240
So, let's say we have an elementary reaction: 2A --> C The rate of this reaction is (according to IUPAC:...
Nov21-10 06:45 AM
Amok
4 2,662
Hello; I don't understand the symbols drawn on this diagram; ...
Nov20-10 09:13 AM
Borek
3 2,681
We just started learning this in chem, and I thought it was quite simple. I missed the particular lecture, and am now...
Nov27-10 12:49 PM
hawkingfan
7 2,655
And how does it make metals better conductors? Is it because the free electrons move charges around better than things...
Nov21-10 09:11 PM
waxon
1 3,044
Why does a can of soda "explode" when it's shaken? I looked online, but all the explanations were either very...
Nov23-10 10:30 AM
Robot B9
10 3,818
I was interested in knowing if my thoughts on this are right or if anyone else has any other thoughts on the reaction...
Nov24-10 08:47 PM
DDTea
5 10,657
Hi, can anyone tell me what the electron densities of Carbon Strontium water calcium are? i cant find it anywhere...
Dec4-10 02:36 PM
Borek
4 1,384
How do we name cyclohexene with E/Z configuration? This compound is symmetric w.r.t. the double bond.
Nov24-10 03:51 AM
zorro
5 8,572
Assuming that super-heavy atoms were stable (at least up to 118), what would be some interesting chemical properties...
Nov25-10 02:15 AM
DrDu
5 3,470
i know the rules of increasing and decreasing atom sizes down and across the periodic table. however, i have met one...
Nov26-10 06:09 AM
sjb-2812
9 5,841
I used a propane gas tank to add thermal storage to my out door wood burner. The ethyl mercaptan residue mixed...
Nov25-10 08:01 PM
Igloozz
6 2,237
In an experiment, 7g benzoic acid is dissolving to 350ml distillated water in 500ml conical flask at 60C for a period...
Nov27-10 07:27 AM
freedom856
9 5,952
I've come across many equations of state in physical chemistry. (only a fraction of those that actually exist) Does...
Dec3-10 02:12 AM
DrDu
3 2,514
today I was cleaning out my fiances hamster cage, we had a hamster in there before, and long story short, we had to...
Nov28-10 05:48 PM
chemisttree
3 12,878
i got this equation:2c2h2+5o2->4co2+2h2o how i Calculate how many grams of C2H2 and how many mol of O2 are...
Nov28-10 03:57 AM
Borek
1 2,235
Hey, 3)4Cl2]Cl I don't understand how there isn't just one mole of Cl- ions formed when you dissolve one mole...
Nov29-10 04:05 AM
bluepen
2 3,585
I'm looking at older exam questions. If you mix 5 kg of water, with temperature 20 cel with 1kg of steam, with...
Dec1-10 03:12 AM
Borek
2 1,752
Is their a method for predicting the molecular shape of molecules without drawing the Lewis structure? I am...
Nov28-10 04:57 PM
DDTea
3 2,805
why do acids and bases dissociate into ions while in water?
Nov30-10 02:05 PM
Borek
3 2,596
Click here for question. Question 33. The atomic Radii of Iodine is much larger than Chlorine hence the bond...
Dec2-10 10:30 PM
elemis
2 2,007
hi guys I want to do wet etch(not dry etch) to remove Silicon Nitride(thickness:200A) on InGaAs samples by using...
Nov30-10 05:12 AM
compound
0 2,040
Sorry this is a really basic question but I'm studying for a chemistry exam which spans about 4-5 chapters and I don't...
Nov30-10 01:44 PM
Mu naught
2 1,572
First off I have to say that I'm not much of a chemist, so there's probably something elementary I've missed here....
Dec3-10 03:44 AM
Kevin VdM
10 3,242
http://img443.imageshack.us/img443/6488/mechanisma1.png The magnesium transfers an electron to the C-X bond, yielding...
Dec2-10 11:36 PM
chemisttree
2 2,890
Please explain Bent's Rule with detailed examples for me. The description on Wikipedia seems confusing, thus rather...
Dec2-10 06:13 AM
dorebase2006
0 1,940
I looked up the median income for a PhD research chemist and it was a paltry $66,000. I'm planning on going to grad...
Dec2-10 11:44 PM
Dr Lots-o'watts
3 7,187
Hi folks, can someone please point out how Atkin got the following relative velocity A-B equation: see attached file....
Dec3-10 07:15 AM
mccoy1
10 1,714
Hey, The decomposition of A is first order, and is monitored. The following data are recorded: t / min 0 ...
Dec4-10 09:17 AM
Borek
2 2,075

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