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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
113 126,343
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
64 136,579
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 36,357
We were just going over examples of reaction orders in class and I was told 2 things: 1.) Negative reaction orders...
Mar28-14 10:59 AM
epenguin
4 507
In the Gibbs free energy equation, does the standard change in entropy equal q(sys)/T(system)? Or in math terms:...
Mar28-14 10:13 AM
Chestermiller
4 369
I read on chemwiki that "The Octet Rule requires all atoms in a molecule to have 8 valence electrons--either by...
Mar28-14 08:22 AM
cgk
1 381
If the question is too silly for this forum you can move it elsewhere, but after reading about this in a linguistic...
Mar28-14 05:40 AM
PeroK
7 372
I read somewhere that a dipole is a seperation of two equal but opposite charges. Is this true or can the two charges...
Mar28-14 04:09 AM
Simon Bridge
2 345
From what I have been learning recently, a dipole is a seperation of electric charges and in chemistry, a dipole...
Mar28-14 03:08 AM
marc32123
2 350
Hi there, I was looking into two photon fluorescence microscopy and was amazed at the light intensity required for the...
Mar27-14 11:54 AM
LionFox
0 297
Dear all, Is there anyone know what's difference between macromolecules and supramolecules? Best, Pu
Mar27-14 12:32 AM
aroc91
1 326
There is a container of a fixed volume filled with gas. There is a second container with a piston filled with gas. ...
Mar26-14 05:33 PM
Chestermiller
3 355
Hi all, I purchased this photochromic fluid https://www.youtube.com/watch?v=eay4N-etB3A ...
Mar26-14 03:16 PM
mrcotton
2 341
(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
9 629
This question has been bugging me and the more I think about it the more confused I get. N2O4 ⇔2NO2 Question:...
Mar25-14 04:42 PM
Yanick
3 351
Does heat affect the rate of an exothermic reaction?? In my point of view it shouldn't affect it since exothermic...
Mar25-14 02:16 PM
Yanick
19 794
And how electrons behave in each separate orbital? I was told that, in case of Boron, electron in 3p orbital will not...
Mar23-14 05:00 PM
DrDu
2 428
I read some books which mention about covalent and partially covalent chemical bonds. However, I cannot distinguish...
Mar23-14 04:49 PM
DrDu
4 402
According to the Molecular orbital theory, diatomic oxygen should have σ2px (internuclear axis) and \pi2py and \pi2pz...
Mar23-14 04:38 PM
DrDu
3 420
Hi, Recently, I made a batch of smoke bombs using potassium nitrate, sugar, and baking soda (to regulate reaction...
Mar23-14 04:38 AM
Borek
1 441
I heard that if Gaussian crashes, you can just resume the calculation by loading the incomplete log file. How do I do...
Mar22-14 07:21 PM
CrimpJiggler
0 388
http://i.imgur.com/oydkAuE.png As you can see, octet rule isn't satisfied for the central atom Xe, it has 2 more...
Mar21-14 07:08 PM
dextercioby
1 399
I can't see why more (s) character hybridised orbitals possesses stronger bond. I just understand that more (s)...
Mar21-14 03:23 PM
sludger13
0 340
Figured this was more a chemistry question than nuclear question, so I put it here. When an atom of tritium in...
Mar21-14 03:13 PM
Borek
2 341
I've learnt that a more active metal displaces a less reactive one. So, according to the reactivity series Ca cannot...
Mar21-14 02:01 PM
Borek
4 418
A question about an anhydride that has nothing to to with acetic acid! How novel! I am not entirely sure I...
Mar21-14 03:49 AM
Borek
5 395
In Standard Hydrogen Electrode why only Platinum electrode should be used and why should it be dipped in HCl?why cant...
Mar20-14 02:59 PM
Borek
1 802
Given the half reaction: 2H2O(l) → O2(g) + 4H+(aq) + 4e- How would you set up the Q equation for this reactions?...
Mar20-14 02:54 PM
DrDu
9 443
density of normal water -1 gm/cm cube and density of soap water -0.9 gm/cm cube. We know that the addition of soap...
Mar20-14 01:34 PM
Borek
2 368
Hello, I hope all is well, I have a few questions regarding fluorescence spectral corrections. I have run into an...
Mar19-14 06:35 AM
amattiol
0 311
I am trying to understand the best way to dehydrate water from a liquid slurry fruit and vegetable blend, without...
Mar19-14 05:41 AM
Straw_Cat
2 508
Is there a force between a particle of ionic compound? (such as salt) (image that I uploaded), I know that there are...
Mar18-14 04:26 PM
Borek
4 441
Is there any liquid that has lower density than petrol. one more point : it should not be a fuel.Is there any?
Mar18-14 09:13 AM
DrDu
6 386
I have a question about the derivation of the formula for relation between Specific Conductance and Equivalent...
Mar18-14 08:16 AM
amk_dbz
5 397
Hello! I have a question for the chemists out there. Every chemistry book in the world seems to offer a question...
Mar17-14 03:54 PM
Chestermiller
11 480
Suppose in the reaction 2 NO + O2 --------> 2NO2 Why when the the concentration of NO is doubled, the rate...
Mar17-14 01:39 PM
Borek
6 362
The enthalpies of creating a cyclohexene radical isomers are: ORTHO: 444 kJ/mol...
Mar17-14 12:23 PM
sludger13
1 332
N2 + 3H2 -----> 2NH3, For this reaction to occur does one nitrogen have to collide with 3 hydrogen molecules, or...
Mar17-14 07:27 AM
DrDu
3 337
H2+1/2 O2 ---------> H20 If the equation is multiplied by 2 Will the equilibrium constant change or remain...
Mar16-14 08:22 PM
Useful nucleus
4 382
I would be most grateful for some tips of interactive software, which shows the hybridized atomic orbitals overlapping...
Mar16-14 05:47 PM
DrDu
5 617
My chemistry textbooks makes the claim: Measurements of osmotic pressure generally give much more accurate molar...
Mar16-14 04:36 PM
Tclack
0 308
what makes some particular elements and compounds a good catalyst for a particular reaction?
Mar14-14 03:28 PM
epenguin
2 391
Can someone give me a link where I can find data on the size of an H atom (free and in main compounds like water)? If...
Mar14-14 08:59 AM
bobie
2 393

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