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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/...
Jan9-14 11:09 AM
physyapps
113 126,333
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
64 136,564
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 36,349
hi every body i have a problem with the gaussian09 calculation . after i optimize my molecule iwant to calculate the...
Aug10-11 11:25 PM
sido3816
0 1,637
Before I begin my next experiment, I was hoping to get some feedback in regards to it. What I was thinking of doing...
Aug9-11 03:42 PM
SMD1990
0 1,034
Question 1: When hybridization takes place, how do all the hybridized orbitals have the same energy? Here is an...
Aug9-11 06:34 AM
AudioFlux
3 2,863
What about Bronsted acids? And what about Lewis bases that don't have pH's over 7? (same for Bronsted bases)
Aug8-11 09:54 PM
Ygggdrasil
2 1,489
Okay, so I need urgent help on my chemistry extended essay. I am doing my extended essay on determining amounts of...
Aug8-11 07:37 AM
chemistry93
0 1,543
I have been trying to work this out over 2 days now and I just don't understand! The side chains of Aspartic acid and...
Aug7-11 08:39 PM
Yanick
4 7,051
I was giving today zinc -tablet to a patient directly to her stomach because she cannot move. The tube which I first...
Aug7-11 03:19 PM
soopo
1 1,888
If I know the percentage by weight of elements in a formula I can calculate the relative ratios of atoms in the...
Aug7-11 09:47 AM
Redbelly98
1 2,375
how can heat change between system and surrounding be reversible? du=q-w' in this case, heat change, i reckon...
Aug7-11 05:54 AM
Studiot
6 2,800
i was told that entropy of universe always increases. however i came across this text: ...
Aug5-11 05:54 AM
Ryan_m_b
1 1,356
Hello, I was confused about which bond is stronger, ionic or covalent..... thinking and searching about that, I found...
Aug4-11 10:58 AM
Ygggdrasil
1 2,528
I was working on my chem lab, this question occurred to me. Water and dichloromethane are both polar molecule....
Aug4-11 09:00 AM
y2j_molino
4 49,999
I got this question from a british friend, who has worked with GCs before. I was not sure if to post it here or in the...
Aug4-11 05:21 AM
Lunar_Lander
0 1,490
Hey, I will be taking a high school course in chemistry next week and I am wondering why things in chemistry work. No...
Aug3-11 01:34 PM
dixitjan@gmai
5 3,465
Evaporating Dextrose Solution: Best Method for Purification? This might seem like a simple question, but the more I...
Aug3-11 09:52 AM
dwilkerson
0 1,214
There is one topic in my chemistry book which is driving me nuts . There is given a solubility chart showing that...
Aug3-11 09:24 AM
Pranav-Arora
19 7,109
Hi, I am interested in letting high school students explore the effect of various conditions on the degree to which...
Aug2-11 03:38 PM
Fewmet
0 1,018
As an experiment I was going to investigate the use of a spectrophotometre as a pH meter by using different chemical...
Aug2-11 07:14 AM
SpectraCat
2 1,833
\DeltaG = -n F Emax and \DeltaG = \DeltaG\circ + RT ln(Q) When do we use the first equation and when do...
Aug1-11 09:42 AM
Mike H
1 1,680
Hi Everyone! I am having a little trouble understanding the concept of drug chirality... I know what they are, but...
Aug1-11 07:16 AM
nymbler_064
14 3,047
Does Cr2Cl3 molecule exist??? I have heard of CrCl3 but not Cr2Cl3 & cant find it on google !!! Thanks in...
Jul31-11 11:58 AM
Mike H
1 2,217
Why do certain elements (particularly transition metals) possess varying charges in different reactions? For example:...
Jul31-11 11:36 AM
Mike H
1 2,871
What configuration air cleaner will clean phenols out of the air? Just read where CFL bulbs emit phenols......thanx
Jul31-11 10:24 AM
Zentrails
3 1,444
Just a Quick question, do atoms 'want' to form octets due to electronegativity varying through periods, or is it due...
Jul30-11 11:45 AM
QuasiP
8 1,914
My book says the following: NH4NO3 is weakly acidic as a salt because it is composed of the conjugates of the base...
Jul30-11 11:19 AM
QuasiP
1 1,292
I have just been trying to teach myself about the effect of activating and deactivating groups on electrophilic...
Jul30-11 11:01 AM
QuasiP
1 2,485
There are a lot of denaturants employed in denatured spirits plants. Please help me identify incompatible alcohol...
Jul30-11 04:39 AM
amolayemi
0 988
I encountered a chemical (COOEt)2C, and I don't really know what does Et mean. I am not familiar with chemistry, but I...
Jul30-11 01:45 AM
ntusg
3 3,156
I'm a student preparing for IIT-JEE. Can anyone suggest me some standard reference books for physical chemistry?
Jul29-11 07:13 AM
sankalpmittal
1 2,530
Applying a little hippie to chemistry, suppose there are two H (hydrogen) atoms that are at a distance apart that each...
Jul29-11 03:01 AM
Levi Tate
0 979
Confusion with molecular geometry I'm trying to understand the molecular geometry of four different compounds: ...
Jul28-11 10:41 PM
sinjan.j
2 2,089
In chemistry its often said that energy must be added to system to break atomic bonds and conversely when atoms bond...
Jul28-11 07:50 PM
That Neuron
2 5,462
Hey guys! It seems that there are a few users here, so I will post the same question I posted over at chromforum.org:...
Jul27-11 10:03 PM
Saladsamurai
2 2,208
while deriving the formulas for cp and cv pdv is considered and vdp also work is not considered ...
Jul27-11 02:30 PM
subbaiyan
0 1,498
I'm a Junior, Chemistry major. My schedule for the fall is the following. Inorganic Chemistry, Inorganic Lab,...
Jul26-11 03:33 PM
sjb-2812
1 1,286
I am wondering if I heat Fe2+ Or Mn2+ in air at 700 to 1000 C, does their oxidation number change??? if yes, how...
Jul26-11 10:43 AM
Panthera Leo
0 814
in a recent chemistry experiment at school, two voltaic (galvanic) cells were set up with the same solutions in either...
Jul26-11 09:11 AM
Ecclesiastic
24 5,901
The other day, I went to a local library to look at the CRC Handbook. I was trying to find out about the solubility of...
Jul25-11 10:14 PM
SpectraCat
8 4,917
I am trying to model the behavior of oxygen in water. However there is so little oxygen in water I don't think I could...
Jul25-11 06:16 PM
Dr_Morbius
1 1,263
Chemical bonding force. Help me understand how chemists describe this force! So one proton has a positive charge....
Jul24-11 03:28 AM
mishrashubham
8 2,734

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