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Jan16-12 Greg Bernhardt
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/...
Aug20-14 04:40 PM
Andrew Tsvyk
116 150,505
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
64 157,764
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 41,833
Hello, I'm trying to understand the concepts of the change in internal energy (U) or enthalpy (H) of a reaction,...
Nov5-11 02:19 PM
juanrga
11 13,073
I'm working on a few problems involving the Heisenberg Uncertainty Principle and I'm a little confused as to how the...
Nov3-11 12:09 PM
cam224
0 3,394
I would like to relate the pH of an aqueous phase diprotic acid solution to a value of the undissociated acid species...
Nov3-11 01:50 AM
jonnyupton
8 5,154
Hey guys, I'm doing an experiment trying to find the equilibrium concentration for the reaction: Fe 3+ + SCN- =...
Nov2-11 10:11 PM
symbolipoint
1 1,200
Anyone familiar with chemical reaction mechanisms that are currently in dispute?
Nov1-11 01:38 PM
gabriels-horn
0 1,424
Hi guys, I'm facing a problem. I've read a paper where they tried to synthesise a crystal and they give the...
Nov1-11 10:36 AM
Borek
3 1,915
I would like to convert methane to carbon dioxide without using combustion. The aim is to generate as little heat...
Nov1-11 10:10 AM
ZealScience
6 2,829
In my attempt at standardizing an EDTA solution, the blank solution titration was successful, but the standardization...
Oct31-11 03:37 PM
Borek
3 2,427
why carbon can form polymers and sillicon not? though both are tetra valent. explain this based on its orbital and...
Oct31-11 11:09 AM
Borek
2 1,557
Hi everyone! I'm looking to separate nickel from a meteorite sample and I have a pretty solid plan... however I'd like...
Oct30-11 03:40 PM
jeseravi
0 988
In my lab at college we were analysing various pharmaceutical excipients, stearic acid being one of them. We did an...
Oct30-11 03:01 AM
Borek
1 2,400
In college we measured the viscosity of microcrystalline cellulose and used the result to determine its degree of...
Oct30-11 02:39 AM
Borek
1 2,264
Hello, I understand that this question may seem rather obvious for some. Nonetheless, it is something that seems to...
Oct29-11 05:33 PM
Highway
3 2,389
Nitrogen is a lewis base because it has a lone pair of electrons with which to form bonds with electrophiles. Oxygen...
Oct28-11 04:57 PM
Highway
7 4,870
hi , I've a proton NMR spectra that I'm not sure how to interpret. The spectra in CDCl3 is 3.94(s, 3H) , 3.97(s, 3H)...
Oct28-11 12:40 PM
PeetPb
0 1,253
I am going through Sn1, E1, Sn2, E2 reactions and I'm trying to figure out if the reaction involves a nucleophile...
Oct28-11 11:58 AM
CrimpJiggler
7 8,642
Hi all, I have a question regarding the nomenclature of organic compounds. What is the significance of -5-yl in ...
Oct27-11 11:34 PM
newyorkcity
1 2,248
Hi, What is the best acid/solution which can clean the rusty surface of Iron metal...??? Is Nitric acid good...
Oct27-11 08:04 PM
Ouabache
4 2,258
I was reading about the effects of adding substituents in designing drugs and read that halogens, like methyl groups,...
Oct27-11 01:14 PM
CrimpJiggler
0 1,221
I have a large lot of beakers, tubes, various types of lab glass that was left to my friend when his brother died....
Oct27-11 08:03 AM
ZealScience
3 1,325
Q: A reactor is needed to convert A to R in a liquid reaction. The stoichiomentry is simply A→R and the rate data is...
Oct27-11 05:01 AM
danago
3 1,594
I wonder why bases are called so? In other languages they are named according to the same principles, but I don't get...
Oct27-11 03:47 AM
ctapobep
3 1,879
Using the Ion Electron Method (acidic conditions) I need to solve: MnO4- + C2O42- -> Mn2+ + CO2 So I tried...
Oct27-11 02:45 AM
Borek
1 1,147
Why do pi electrons in a benzene move?
Oct26-11 10:56 PM
Ygggdrasil
9 5,346
So I never got too far into chemistry and had never had much thought put into this. What exactly causes an ionic bond?...
Oct26-11 08:22 PM
mishrashubham
1 2,064
I'm confused about something. If there are an infinite number of energy levels available to an atom, how and why would...
Oct26-11 05:42 PM
epenguin
2 1,086
if i am to calculate the energy of an electron in the 3d orbital of oxygen atom.....how i am supposed to consider the...
Oct26-11 12:27 PM
khurram usman
0 1,074
Hello, So, I am reading this theory, and I come across this sentence explaining to me that gas particles of...
Oct26-11 10:23 AM
ZealScience
1 1,601
I have three questions I can't find an answer for online about catalytic converters: 1. How does rhodium remove...
Oct26-11 05:56 AM
Justin Hawk
6 2,081
Hi. Is there anyone else like me? I like fire and a lot of things fire-related. Does anyone know an easy way to get...
Oct26-11 02:54 AM
Borek
1 1,012
1. When a cup of water is in a freezer, for a while, some of it's ice and some of it's liquid. Does that mean...
Oct24-11 02:01 PM
Ygggdrasil
3 1,234
i need to find the nodal plane equations for any of the 2p orbitals the angular wavefunction for 2pz is :Y=...
Oct24-11 12:42 PM
khurram usman
0 1,720
I've come across the concept of complementary colours where if a compound absorbs one wavelength then to the eye, it...
Oct24-11 05:48 AM
DrDu
3 4,025
When I was in class 8th or 7th , I used to complete and balance equations by logic. For example : 2Na+2H2O --->...
Oct24-11 04:44 AM
sankalpmittal
2 1,335
Hello all- I am working to calculate the value of I3 for Li. I am working through the formula: Z2hR/n2 Can...
Oct23-11 12:58 PM
Borek
1 3,057
I'm trying to decipher exactly what it means to say the following things: (1) The ground electronic state of NO_2...
Oct23-11 02:36 AM
Borek
1 995
I didn't really learn chemistry in HS but I need to know the basics for a thermodynamics course. I have the option...
Oct22-11 08:56 PM
Eleeesa
5 20,238
We have hit stereochemistry , and I realize I will be screwed unless I can get my drawings down-pat. Okay, so, let's...
Oct22-11 05:15 PM
Marconis
4 1,557
For example, on this website http://www.chemguide.co.uk/physical/redoxeqia/combinations.html in the second diagram...
Oct22-11 03:12 AM
Borek
1 2,910
Hi, I have some sodium silicate and I am willing to get a solid chunk of glass out of it... but I am not...
Oct21-11 03:52 PM
Panthera Leo
0 1,454

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