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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/...
Apr18-14 03:49 PM
djh101
114 126,700
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
64 136,953
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 36,459
Hi So the reaction is below: Sodium thiosulfate + HCl = Sulfur + NaCl+ Water+ SO2 So if I wanted to say...
Feb27-12 12:00 PM
kenshi64
6 1,199
Hi, I'll be quick, I calculated the Concentration Final using this formula Conc Final=(Volume Initial×Concentration...
Feb27-12 10:58 AM
kenshi64
0 866
The lower the altitude, the more rapidly the atmospheric pressure changes with respect to altitude. ...
Feb27-12 01:48 AM
DrStupid
11 2,505
When I galvanize iron or attract a more reactive block of metal to iron, that metal will oxidise instead of the iron....
Feb26-12 04:34 PM
sgstudent
5 1,531
I am a little confused about the meaning of pH, especially when you have a basic solution. I know that pH = -log ,...
Feb26-12 02:52 PM
Borek
4 1,778
im taking a course for credit as a student and the course is on computers in chemistry, some of the stuff we have...
Feb26-12 02:08 PM
Mechdude
0 675
Hi all, I just need a little clarification here, please. I'm a tutor and I've been helping a student with their...
Feb25-12 11:12 PM
Bipolarity
1 2,593
Does lower density usually mean the material is lighter? I went through high school believing that an object with a...
Feb25-12 07:17 PM
Jorriss
3 1,803
I don't understand how the above conversion works. For example say conc of HCL was 0.106mol dm^-3 and we want it in...
Feb25-12 04:31 PM
xplosiv3s
1 2,715
Why is it that atoms must have 8 valence electrons in order to be stable? Aren't electrons most stable when the...
Feb25-12 11:43 AM
juanrga
1 2,225
In my chemistry class today we learned about equilibrium and how temperature affects the equilibrium constant. An...
Feb25-12 04:42 AM
Panthera Leo
4 3,526
I have 6 different household unknowns that I am trying to distinguish. I need to: - identify the active ingredients...
Feb24-12 01:45 PM
Borek
1 1,849
To test the ability of Br2 and I2 to oxidize copper metal, the reactions take place between Br2water and I2 solution...
Feb24-12 05:50 AM
tevatron1
2 3,164
Dear friend, I am getting confused in this question;what i learned till now is that number of proton+number of...
Feb24-12 02:23 AM
Borek
1 2,288
With regards to Wittig reactions, how does one know whether the cis or trans isomer is favoured? More specifically,...
Feb23-12 01:39 PM
brettlawrie
2 3,334
Hello this is my first post to this forum though I've lurked before. I want to paint with something 100% clear and...
Feb23-12 01:07 PM
turbo
5 2,782
If we use heat and a catalyst to crack water into oxygen and hydrogen, how can the efficiency of the process ever be...
Feb23-12 10:30 AM
DrDu
3 1,262
So suppose you have ammonia gas suspended above a column of water. Because both ammonia and water are polar, some of...
Feb23-12 10:14 AM
mjpam
19 2,430
Hey all, I have another horticulture question, this time concerning the practical use of bio-degradable pots. While...
Feb22-12 02:49 PM
PVastro
2 1,160
How does zinc convert phenol to benzene? Its a metal and why metals react with alcohols they displace the hydrogen...
Feb22-12 12:30 PM
Nik_2213
1 2,878
When I want to prevent iron from rusting, I use a more reactive metal such as magnesium and connect it to the iron....
Feb22-12 05:08 AM
sankalpmittal
1 1,886
Hi all I am posting this question because i have NO prior experience in chemistry and thought this would be the best...
Feb21-12 02:04 PM
PVastro
7 1,503
2MoS_{2} + 7O_{2} \rightarrow 2MoO_{3} + 4SO_{2} So here I have a redox reaction, it's already balanced but just...
Feb21-12 01:24 PM
Borek
5 1,215
What decides that which salt will take up which crystal lattice? Some salts have cubic lattice , some have hexagonal...
Feb21-12 02:16 AM
chemisttree
4 1,175
How does concentration of solution (So42) affect the voltage in a electro-chemical cell?
Feb21-12 02:06 AM
chemisttree
2 1,383
Hey all, I'm new here, but used to frequent in high school when I was having a lot of trouble with Physics. Now I'm...
Feb21-12 02:01 AM
chemisttree
1 1,166
How do ions allow the transfer of electrons through a solution?
Feb21-12 01:57 AM
chemisttree
1 1,156
Cyclopropane is a cycloalkane with three carbon atoms. Each carbon is bonded to two hydrogens as well as the other two...
Feb21-12 01:56 AM
chemisttree
3 2,551
Ultrafast laser spectroscopy, as I know, is used for the determination of femtosecond events in condensed phases. ...
Feb21-12 01:48 AM
chemisttree
1 827
How do these new cold asphalts, that allow to repair potholes filled with water work? What chemistry/mechanism allows...
Feb21-12 01:40 AM
Charles123
3 937
Hello there I am trying to find the electron affinities higher than one for the iodine, carbon and hydrogen atoms? ...
Feb20-12 03:53 PM
cgk
4 1,491
I have seen in my textbook that most colligative properties are defined in terms of molality. This must mean that...
Feb20-12 09:09 AM
Bipolarity
3 1,862
What are the products of electrolysis of brine solution? At cathode i know it will be hydrogen But i am confused...
Feb20-12 06:59 AM
jd12345
2 999
IS gibbs free energy change at constant pressure zero? ΔS = q / T. At constant pressure q = ΔH so ΔS = ΔH / T So ΔG...
Feb20-12 05:17 AM
DrDu
5 2,131
There are many reactions in which i dont understand what the role of catalyst is. Reactions like hydrogenation of...
Feb19-12 09:28 PM
jd12345
7 1,535
I am little confused on when you use the "bi" prefix to denote the existence of a proton in front of an oxyanion. ...
Feb19-12 04:18 PM
Borek
1 1,126
Consider the metal-ligand complex of the tetrahydroxoaluminate ion. ^- In this ion, the aluminium is bonded with...
Feb19-12 12:42 PM
xplosiv3s
1 1,252
Hi there! A quick question regarding calculating the radius of a critical nucleus. If I am only given the...
Feb19-12 11:36 AM
Fixxxer125
0 1,135
Are all electron affinities beyond the first electron affinity positive? For example the first electron affinity of...
Feb19-12 07:28 AM
xplosiv3s
0 2,169
So I am almost done with my Chemistry Major, but I really enjoy physics!!! Is it possible to still go into physics,...
Feb18-12 08:53 PM
Mike H
1 1,296

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