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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
116 150,075
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
64 157,386
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 41,701
Is propan-1-ol more soluble than propan-2-ol in water? Propan-2-ol has 2 alkyl group, which is electron donating. ...
Apr23-12 07:06 AM
epenguin
5 2,516
According to the reactivity series, copper is below hydrogen. In theory, hydrogen gas should be able to displace...
Apr22-12 06:07 PM
ajkoer
3 2,453
Why do sodium and potassium form peroxides and superoxides when they burn?
Apr22-12 04:13 PM
Mike H
3 1,183
Hello, I have to preform a titration on a alkali substance but do not have the neccesary equipment to do so. I was...
Apr22-12 12:05 PM
MrSid
4 887
If adding impurities, such as salt, to water will increase the boiling point of water, what if it's the other way...
Apr22-12 10:48 AM
MrSid
1 1,208
Really I'm looking for a good carrying agent that will dissolve paraffin wax, but preferably that also evaporates...
Apr22-12 09:43 AM
MrSid
1 12,552
Hey guys. I'm a little confused about calculating the bond order and choosing the correct electron configuration....
Apr21-12 01:42 PM
carle
0 3,189
Hello. I have a question about ionization energy: Two hypothetical elements in the 2nd or 3rd period have the...
Apr21-12 11:35 AM
Borek
9 1,907
Hi, All: I bought a liquid mix of teas, which turned out to be way too sweet for my taste. I was hoping to...
Apr20-12 08:06 PM
NascentOxygen
8 1,517
Can someone help me understand the concept of chemcial equilbrium. I think I understand in a certain chemical...
Apr20-12 03:58 AM
Raishah
3 1,407
What is the mechanism by which these cations cause cancer?
Apr20-12 02:55 AM
praeclarum
2 1,044
What is the pH of 0.15 M NH4Cl? Okay, I set up my ICE table, NH4 + H2O <---> H3O+ + NH3- I 0.15 M --- ...
Apr20-12 01:43 AM
Borek
6 1,521
They say that when 2 unequal ions of different sizes approach;the smaller ion attracts the bigger's electrons..now of...
Apr19-12 11:09 PM
Shivam123
2 935
I noticed in the data booklet that C-H vibrations in arenes has many values depending on how many adjacent hydrogens...
Apr19-12 12:25 PM
jsmith613
0 1,398
Ok, I understand the difference between diamond and graphite but how is it that diamond actually forms? Why is that...
Apr19-12 03:51 AM
Borek
1 1,344
Hi Does nonlinear conductive liquid metal exist? Which and where? thx
Apr18-12 07:58 PM
samjesse
7 1,434
It is stated that for the halogens reactivity decreases down the group. Buy why is this so? Since they would form...
Apr18-12 04:37 PM
aroc91
5 3,041
A few weeks ago, I got a titanium crown next to a gold crown. Now I'm getting weird reactions in my mouth. I emailed...
Apr18-12 02:17 PM
Borg
3 1,656
According to my book, for 1st row Transition Metals, the acidity of a aquo-complex is greater for those elements at...
Apr18-12 11:58 AM
Chemist20
0 847
Hello! When an s and a p orbital are hybridised to give and sp orbital, two orbitals are produced. According to my...
Apr17-12 04:13 PM
DrDu
5 3,189
zwitterion is defined as is a neutral molecule with a positive and a negative electrical charge (n.b. not dipoles) at...
Apr17-12 12:00 PM
physicsn00bie
5 5,431
Gold has rather high electronegativity. If that is the case then why does it often appear in nature in its pure form?...
Apr17-12 02:17 AM
Borek
1 1,552
Hello, just wondering what would be produced when chloramine and dichloramine is introduced to sodium carbonate. In a...
Apr17-12 01:45 AM
Borek
1 1,238
This question probably belittles the complexity of the issue, but I thought I'd ask anyway: Are there any...
Apr16-12 09:37 AM
uby
2 2,330
I am feeling a little stupid asking this considering I am about to graduate with my BS in chemistry. But I have never...
Apr16-12 07:08 AM
Borek
2 1,546
When metals such as sodium react with an acid, a salt and hydrogen gas is produced. and we know for sure the oxidation...
Apr15-12 02:54 PM
DrDu
4 1,581
I have been studying stereochemistry and it says that optically active molecules(chiral molecules) rotate plane of...
Apr15-12 02:40 PM
DrDu
4 1,769
If I purify monosaccharide alpha/beta isomers, which I can clearly see by TLC, will they just isomerize again once I...
Apr15-12 09:23 AM
gravenewworld
5 1,862
Say that the electrode potential for the following half reaction is E : A++e- \rightarrow A , where A is a metal ...
Apr15-12 01:48 AM
anigeo
0 1,576
Hey there, My textbook doesn't expand on this much and I'm unsure if I'm just not seeing some obvious connection;...
Apr14-12 02:42 PM
Mangoes
0 1,128
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 1,475
I know I know this isn't really related to molecular biology, but I figured since Biologists have a strong background...
Apr13-12 12:48 PM
CptWayne
24 6,359
I usually see a specific functional group is reacted with a transition metal to forma complex producing bright...
Apr13-12 02:21 AM
Borek
1 778
In the diagram attached, the 3 resonance structures of arenium ion bonded to H electrophile are shown.I labelled the...
Apr12-12 09:17 AM
tasnim rahman
5 1,685
Any ideas? Thanks so much!!
Apr12-12 06:10 AM
MrSid
3 1,265
is solid carbon dioxide(dry ice) soluble in water
Apr12-12 05:55 AM
MrSid
3 1,677
I know that the sigma 2p bonding orbital could be less/higher in energy than the pi 2p bonding (based on if it is...
Apr12-12 03:35 AM
DrDu
1 1,508
Ethanol has a higher ΔHvap than water (43.5 vs 41.3 kJ/mol). But water has a higher boiling point (373 vs 352K). How...
Apr12-12 03:04 AM
DrDu
4 3,826
Hi, I have some problems, 1. How to use basis sets in turbomole that not default (def-SVP)? 2. How to use scripts...
Apr11-12 10:51 PM
zainswar
0 944
Okay, I'm reviewing how to write reactions to determine which reactant should behave as the acid and which should...
Apr11-12 09:07 AM
d.tran103
4 1,149

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