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Jan16-12 Greg Bernhardt
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 40,696
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
64 153,514
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/...
May7-14 10:06 PM
Awheezi
115 145,432
Hi Why does a bond stretch or vibration have to cause a change in dipole moment to be IR active? Presumably all...
Jul9-10 10:39 AM
alxm
5 7,481
Hi At equilibrium there is a constant ratio of products to reactants and the rates of the forward and back...
Jul3-10 10:47 AM
Moogie
0 768
Hi What exactly is an explosion? How is it different from something burning? When you get an explosion with...
Aug18-10 06:05 PM
cesiumfrog
21 4,275
Hi If you were making MgO by heating Mg in a crucible with a lid on, why might the MgO escape when you lift the...
Aug13-10 01:24 AM
Borek
21 6,713
Hi As you progress down groups one and two, the elements become more reactive. This is because the ionisation...
Aug12-10 05:38 PM
Moogie
4 2,437
Hi I was wondering why wet paper doesnt burn and I believe its something to do with the ignition point Is it...
Dec5-10 09:56 AM
dorebase2006
13 6,494
Hi Can anyone recommend any tools for creating resources for teaching chemistry and molecular sciences? I used...
Aug12-10 01:52 AM
Borek
6 2,250
Hi I'm trying to review some fundamental chemistry and I want to make sure I understand the difference between a...
Aug12-10 07:53 AM
Moogie
2 1,104
Hi I would like to consider the thermodynamics of boiling a liquid to a gas. I am assuming there are no...
Aug12-10 11:03 AM
Ygggdrasil
1 2,620
Hi I believe when you add carbon dioxide to water it will undergo hydrolysis to form carbonic acid CO2 + H20...
Jun9-11 09:33 PM
morrobay
15 30,850
Hi I'm just wondering how other life forms on different planets might be able to evolve. Some of my thoughts: 1)...
Sep5-10 06:44 AM
Moogie
2 1,336
Hey guys! I just wanted to ask if any of you knew a compound thats easy (and affordable) to make at home that is...
May4-09 05:06 PM
wil3
2 1,714
Hi all, I have some history in practical electrochemistry, and have, I think, a reasonable uderstanding of the...
Feb15-12 05:18 AM
mooliak
1 1,508
There are a number of homework help questions under the topic of "other sciences" that are chemistry questions and are...
Mar5-06 08:44 PM
GCT
1 1,775
Hi, I am a junior, currently writing a research paper on usage of calculus, especially differentiation, in chemistry....
May13-10 01:15 PM
Acut
7 6,490
What wavelenght is expected for light composed of photons produced by an n= 3 to n=1 transition in a hydrogen atom? ...
Mar24-05 12:46 PM
paul11273
4 1,742
Does anyone know where I can find Partial Energy Level Diagram for Hydrogen? Thanxs.
Aug23-10 09:11 AM
bharata
4 13,381
so can soemone explain to me how to know if the elmt is polar or nopolar..i know by doing it by the En way .. but is...
Apr21-05 02:40 PM
moonlight1
0 1,588
Hi does anyone know why it is imporatnt not to permit the solvent front to reach the top of the chromatogram?
Apr21-05 09:17 AM
moonlight1
4 2,958
Hello, I live in south Texas. The closest nuclear plant is operated by the South Texas Project. I don't know...
Apr22-11 12:57 PM
moonman239
0 914
Here's what I know: Scientists used mass spectrometry to figure out the number of electrons in a neutral atom of the...
Nov7-12 05:39 AM
epenguin
1 1,150
I'm working as an intern at a factory that produces refractory bricks, mainly doing measurements on a tunnel kiln they...
Jun22-11 01:41 PM
moonunits
2 6,461
I am writting an essay for AP biology when I realize I am not entirely sure why water has a high specific heat. I...
Aug18-05 12:19 AM
Gokul43201
1 25,382
What is the easiest way you can tell or find out if oxygen is produced in a certain reaction? Or in other words, how...
Dec13-05 01:02 PM
GCT
4 2,725
For those who haven't seen it, if you put a little soap detergent in a dish of milk with some food coloring in it, you...
Sep12-04 01:00 AM
chem_tr
1 11,214
Hello everyone. I am starting my degree in chemical engineering after a 10 year hiatus from school and need some...
Jan15-12 08:48 PM
moouers
3 1,773
Hi, Denis is my name. Study chemistry in Germany. Have to know the mechanism of the reoxidation to TPAP by NMO after...
Jan7-04 12:52 PM
Chemicalsuperfreak
2 6,501
My problem is to describe the reason why a primary alcohol with PDC in Methylenechloride is oxidized to the aldehyde,...
Jan10-04 12:18 PM
GCT
1 3,036
Hi, Does anyone know where I can find post-hartree-fock calculation benchmarks for dissociation energy of the NO...
Nov29-11 08:39 AM
Morberticus
5 2,177
I need to react 1,3-methylcyclopentene with H-Br. Do I do a ring expansion here? What I came up with is...
Mar4-12 03:34 PM
morgan8222
12 2,852
I am asked for the "actual products" of reacting Br(2) with: trans-1,2-diphenylethene and cis-1,2-diphenylethene...
Mar16-12 02:43 AM
Borek
1 1,737
What would be the product if I carried out a bromination of an alkene using isopropanol as the solvent?
Mar18-12 11:44 AM
sjb-2812
1 1,450
I am wondering if this would work: I need to sublimate compound 1 (mp 175-177 C) from compound 2 (206-208 C) at 120...
Apr5-12 07:39 PM
gravenewworld
1 1,226
I am wondering if I can separate these two compounds: Y: M.P.=170 degrees C - Vapor pressure at its MP = 0.05 torr...
Apr7-12 01:27 PM
chemisttree
1 1,224
I need to figure out how to synthesize 3-methyl-3-hexanol from acetylene. So, there is a methyl and an OH on the...
Apr14-12 02:10 PM
MrSid
2 1,450
I have recently contacted three pH D 's in the chemistry dept at Scripps Institute of Oceanography, U.C. San Diego on...
May21-11 10:12 PM
morrobay
0 2,209
What is the maximum concentration, Moles/liter, possible for one liter of H2CO3 at STP. And how is that calculated ?
Jun16-11 04:24 AM
Borek
1 2,240
One atomic mass unit = .001660565 x 10-24 grams One gram Hydrogen / .001660565 x10-24 grams = 6.02 x 10 26 ? This...
Dec5-11 05:48 AM
morrobay
2 2,007
With .1M HCl the pH = -Lg 10-1 = 1 With .2M HCL the pH = 2 Since both solutions are low concentrations of a strong...
Mar14-13 07:00 PM
ajkoer
7 2,644
The maximum concentration of dissolved HBr , 8.9 moles/L is less than HCl 12 moles/L The values from table below...
Mar16-13 04:06 AM
Borek
2 1,331

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