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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/...
T 03:49 PM
djh101
114 126,460
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
64 136,693
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 36,381
Can you work units cubed the same way you can work units that aren't cubed in dimensional analysis? Like...does 1m3...
Aug28-11 07:26 PM
Mute
1 4,895
Why canít I separate salt from water with a centrifuge, or simply by letting it sit for some time? Salt water is a...
Aug28-11 04:14 AM
sankalpmittal
3 2,129
I have a solid crystal with structural channels in it which are filled with water molecules. The size of each channel...
Aug27-11 06:05 AM
Panthera Leo
15 3,584
Hi, I was surfing YouTube and came across a very interesting video... Check it out yourself; ...
Aug27-11 05:41 AM
Mapes
6 2,968
I could not find anything online indicating that such was so, but... If electrolysis of a solution of zinc sulfate...
Aug27-11 02:39 AM
Borek
1 2,993
Is SiO3 soluble in Hydrofluoric acid??? Why am I asking this: I have some crystals of Be3Al2(SiO3)6 - Beryl and...
Aug26-11 07:42 PM
chemisttree
5 2,438
First off, I am glad to be a newbie to the forum. I am a freshman at Colorado State University who is undeclared with...
Aug26-11 04:11 PM
SteamKing
2 1,244
I'm taking AP Bio and we're covering basic chemistry needed for it. I've not had chemistry yet, so I'm left wondering...
Aug25-11 07:01 PM
TylerH
5 2,955
Hello. Today, I have observed something which I do not understand. I have a glass of water with some table salt in it....
Aug25-11 11:23 AM
Borek
4 1,678
I have two big problems in my mind about hydrogen bond for many years. I have checked many textbooks but all of...
Aug25-11 07:10 AM
ampakine
2 1,958
can anyone help me to find solvent to dissolve the Paraffin wax which i have? i need to knoe what type of solvent can...
Aug25-11 05:43 AM
abaanjacob
4 13,849
Where do catalysts come into rate laws? For example in this question:...
Aug25-11 05:32 AM
ampakine
0 1,625
for an atom that is an element in Period 4 , Group 7 to compare with another atom of element in Period 3, Group 5 ...
Aug25-11 04:15 AM
ampakine
1 1,907
Heres the question: http://img194.imageshack.us/img194/9042/vanthoff.png and heres the Van't Hoff equation (the form...
Aug24-11 08:59 PM
mrmiller1
1 3,177
On an exam I got this question: http://img849.imageshack.us/img849/5732/spontaneity.png but at the time I had no...
Aug24-11 03:08 PM
ampakine
2 1,944
I'm in my 3rd year of a chemistry course so its fairly ridiculous that I can't balance equations. I can balance simple...
Aug24-11 02:31 PM
Borek
10 2,378
what is the general structure of ganglioside? and what are the differences between GM1, GM2 and GM3?
Aug23-11 10:52 PM
chemisttree
1 1,500
Hi all, I'm a total noob when it comes to chemistry, and would need your help to understand the calculation of EMF...
Aug22-11 01:47 AM
batteryguy
2 2,495
What is the carbon content of a good samari sword? A samari sword has a blade of extra hard steel for slicing and a...
Aug21-11 12:10 PM
Astronuc
3 2,106
An interesting article. Scientists discovered that millions of microscopic diamonds are created and destroyed inside...
Aug21-11 06:56 AM
Constantinos
0 1,366
For organic chemistry, in an experiment, how does the epimerization (of H) of Potassium carbonate work? Does...
Aug20-11 10:56 PM
c03rcion
4 2,125
Hello, why much substances have one atom when aren't gas and 2 same atom united when are gas (for example N and N2, O...
Aug20-11 10:44 PM
c03rcion
3 1,519
Hi, I wanted to know if you could find the absolute value of internal energy by using E = mc2.
Aug20-11 09:08 AM
AudioFlux
0 1,310
Hi. When glucose is dissolved into water it forms d-glucose where it is equilibrium with its alpha and beta glucose...
Aug20-11 06:04 AM
mattg443
4 1,839
Hi. Let's say we have a salt AB with a very low Ksp. A bunch of it gets thrown into the water and mixed. So: ...
Aug19-11 05:20 PM
Borek
1 1,306
a water monomer has HOH angle of 104.5 and OH length of 0.98 , partial charges are +0.4 on H and -0.8 on O. The...
Aug19-11 02:30 PM
kota.jaya88
12 18,579
I am not 100% certain this is the best place for this. Moderators, if you think a different board would be better,...
Aug18-11 05:29 PM
SMD1990
4 1,557
My book says that you cannot use the Henderson-Hasselbalch equation to find the pH at the equivalence point when...
Aug18-11 04:44 PM
Borek
8 4,855
Why does water taste stale after sitting out overnight? Some suspicions I have... 1) Dust settling, and that...
Aug18-11 08:21 AM
DaveC426913
17 19,013
An buffer solution consists of a mixture of a weak acid and its salt (conjugate base and a cation) or a mixture of a...
Aug18-11 03:22 AM
Borek
2 2,721
Hello, Can anyone help me with this question or point to where I could obtain an answer... 1. When performing...
Aug18-11 03:17 AM
Borek
1 2,446
Actually, it is smaller. Is is more like glitter-sized. What process do I use to extract it?
Aug17-11 10:03 PM
cloud_sync
6 4,128
Electroplated a 5 micron layer of copper a few days ago. Was wondering why there's sulphuric acid in the solution.
Aug17-11 03:04 PM
Borek
1 2,512
I'm currently trying to figure out exactly why aromatics (e.g. polyvinyl toluene , polystyrene , anthracene) fluoresce...
Aug17-11 08:33 AM
Keep_i_real
0 1,462
Hi Guys, Citric acid has three different values for pKa because it is a polyprotic acid. I am aiming to make a...
Aug17-11 03:13 AM
Fra
6 3,009
Hi. I'm currently an intern in a biology lab and I have a few questions about titration. In the lab we are...
Aug13-11 04:28 PM
Borek
5 2,733
Can someone help me understand this statement: The pKa of most fatty acids is around 4.5, so most fatty acids...
Aug13-11 02:53 PM
Yanick
2 5,001
It is known that when pH of solution is greater than 12 phph solution turns colorless. And the structural change which...
Aug13-11 06:03 AM
gemma786
9 2,853
Okay, this question straddles math, physics, biology, and chemistry, so I'm not sure if this is the correct forum to...
Aug12-11 03:49 PM
RossH
7 2,050
Today in lab we performed two different chemiluminescent reactions - one involving the oxidation of luminol with H2O2...
Aug12-11 09:53 AM
DrDu
1 1,903

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