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Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
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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:
Apr18-14 03:49 PM
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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
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For a multi-step reaction, how is the rate determining step defined. Is it -the step with the highest activation...
Dec1-13 10:01 PM
0 644
Hello does anyone know an easy way to purify methane made from biomass? Im not sure what gases im producing but i know...
Dec12-13 08:19 AM
4 644
Hi all, How can I excitation - ionization solid metal ??? May by radioactive material which is too soft.
Jun7-13 03:59 AM
2 645
On the way to prove 1st law of thermodynamics, you consider a system having initial energy E1. Then, you supply heat q...
Sep30-13 04:28 PM
3 645
With galvanic cells, we assume that the redox reaction is kinetically inhibited so that equilibrium takes a long time...
Dec30-13 03:40 PM
3 645
If you add a strong base to a halide, you get mostly the alkene. If you add a weak base, especialy on primary halides...
Jun24-13 03:54 PM
1 646
From a biochemical context, considering the following two dissociation reactions and their respective dissociation...
Oct20-13 05:37 AM
3 646
I have been asked to determine the Amp-Hour capacities of a competing battery technology that is not yet released. I'm...
Aug9-12 10:55 AM
1 647
I've been learning cheistry for a very long time, and I often come across bits of knowledge that becomes permanently...
Oct23-13 04:30 AM
1 647
Is there a water depth at which the gas can no longer be created by hydrolysis, or can something be done to push the...
Dec15-13 08:10 PM
Simon Bridge
6 647
I have came up with a theory, it could be completely wrong or not but i had the idea of ferromagnetic decomposition...
Dec30-13 07:00 PM
Simon Bridge
9 647
hello! which is the impact of static magnetic field on the tertiary structure of organic molecules? which must...
Jun29-12 03:18 PM
0 648
hello, i have no bubbles in distillation of phenylacetone under vacuum, the heat is about 120c, and the vacuum pump...
Dec4-12 10:40 AM
1 648
Lets say you have planet with 2 Earth radii and 8 Earth masses. The atmosphere is 50 bar and is made up of 85%...
Sep1-13 03:28 PM
6 648
Dear forumers, I'm looking for the translation in ENGLISH for the following article : On the Dispersion Mechanism...
May31-13 02:03 AM
1 649
starting with analine how do you attach a NO2 group para, so that NO2 does not get attached ortho? If you add...
Aug5-12 11:46 AM
0 650
Okay this maybe a silly question but I had to ask. In school we are making standard solution to perform a...
Mar1-13 11:25 AM
2 650
First one: is this an intramolecular photocycloaddition? ...
Dec17-13 10:18 AM
1 650
Hello, I have a problem to understand properly this effect. I understand that during the process the change in the...
Jun13-13 10:17 AM
1 651
Hi, I am looking for a good reference on the relative strengths of several bonds. (I think this is the same as bond...
Aug21-13 02:33 PM
Hyo X
1 651
In water ,due to attraction between water molecules and polar solute molecules the solute dissolves. But though alkyl...
Dec2-13 11:23 PM
1 651
(I think Chemistry is the best forum to post this) My question is... does infrared ink exist? Also, If you paint...
Mar25-14 10:56 PM
Simon Bridge
9 651
1 mole of a substance equals the amount of grams needed for that substance to have 6.0221413e+23 (Avogadro's number)...
Apr12-14 03:08 AM
24 651
Hello... I'm making elephant toothpaste for my chemistry project, where I'm using activated yeast+73 ml of water and...
Oct22-13 06:57 PM
2 652 The correct answer states its C which i understand why since doubling the intiial...
Jul24-12 12:30 PM
1 653
hi,a basic question, i added 20 ml of 1M Kno3 with 20 ml of 2 mM of Fe3CN6. will the concentration of the two...
Aug13-13 11:19 PM
2 654
Are there any things that can be explained by valence bond theory, that cannot be explained by molecular orbital...
Nov18-13 04:48 PM
4 655
I was reading this article from Wikipedia on resonance structures: ...
Dec29-13 11:47 PM
Simon Bridge
3 655
in VBT we consider orbitals but orbitals were given by Schrodinger and his quantum mechanics. so we must also...
Sep4-13 01:04 PM
9 656
Hello, How can I calculate the bond dissociation energy for K+Br- when I only know the the length of the bond?...
Oct5-12 02:51 PM
2 657
Is there a material or chemical substance that would have a visable change of any kind when exposed to THC? For...
Dec17-13 03:02 PM
3 657
I'm having some doubts about Ksp, solubility, Kb... 1) If a salt has a solubility of 1g/L, it means that a) there...
Sep26-12 02:16 AM
1 658
Looking to find out the amount of vacuum needed in inches Hg to remove partial pressure of a gas in a tank. Is...
Jul16-13 09:10 PM
0 658
Hello, I was wondering conceptually, why does the density of the individual components change when they are added...
Apr13-14 03:52 PM
4 658
I just came across the hydrolysis of the salts and the formula pH=7+1/2(pKa-pKb) What's bugging me about this is...
Dec21-13 03:43 AM
1 658
Is there a more common term for indicate the concept of depth of an absorption propose by Clark (I suppose)? "The...
Aug15-12 05:11 AM
0 659
im pretty sure i know the answer but want to be sure. if you have a reaction such as : A(g) + B(g) --> C(g) +...
May1-11 03:44 AM
1 660
Hello, If I get 2.0830 grams of tobacco and add 1 gram of barium hyrdoxide to it. Mix it in 100 mL of...
Oct24-12 02:24 AM
1 661
Perhaps I have some mental block with basic algebra (so don't judge me on that), but... Here is a simple high-school...
Feb19-13 04:06 PM
2 661
Hi all, I have a problem than I need to figure out. I have added 7ml ethanol to 3.2 gm leaf(any leaf) I...
Sep27-13 07:47 AM
Abhilash H N
3 662

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