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Chemistry

- The study of the nature, properties, and composition of matter. Biochemistry, Organic, Inorganic, Analytical...
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Jan16-12 Greg Bernhardt
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
64 158,913
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
116 151,609
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 42,204
Hello everyone, I watched a MS thesis defence examination on chemistry, and one question was asked to the student,...
Jan27-05 01:57 AM
chem_tr
4 9,140
I noticed on the news a thing on tooth care and one thing they said was that drinking tap water is better than bottled...
Jun17-12 06:44 PM
marcusl
8 9,126
Hi I wonder if you could help me with the following multiple choice questions: Which of the following does not...
Dec17-03 12:58 PM
GCT
1 9,125
Gibbs free energy and Gibbs Free energy under standard conditions; Hi. Is a value of Gibbs free energy (delta G) and...
May3-10 02:43 AM
DrDu
2 9,122
Hi, I have had some Boric acid (99.9%) bought a very long time ago... The expiry date was in 2006... I have...
Feb7-12 02:05 AM
Borek
3 9,120
i am not sure if my question fits in this place. if i have certain amounts of water and oil, 3kg and 4kg. i mix...
Nov21-06 06:01 PM
Borek
2 9,114
i am a total newbie here....i understand basic principles like supercooling, phase change, etc, but otherwise a total...
Nov1-07 01:49 PM
chemisttree
5 9,098
I am using castic as heating / Cooling media for the reactors in my lab. MOC of my reactor and pipeline is CS. Can any...
Mar28-08 07:15 AM
snr.sr2006
4 9,090
I have seen this claim in the Italian documentary about the use of WP in Fallujah. However I don't understand how this...
Nov11-05 12:08 PM
Bystander
7 9,073
what is your knowledge about carbon ions? is there a machine that determines its creature?
Nov25-05 11:10 PM
Cesium
5 9,070
Hello everyone I have read and heard about proved benefits of adding a very small amount of acetone to the gasoline...
Jul28-10 06:21 PM
CHICAGO
17 9,066
http://cwx.prenhall.com/petrucci/medialib/...rtfolio/22.html the web page above contains a lot of chemistry video....
Oct21-07 11:14 AM
kocher
1 9,058
I understand that a neutralization reaction between an acid and a base will produce some type of salt (most commonly...
Sep26-05 05:42 PM
Borek
1 9,042
Hello all I was asked a question on the first ionisation energy of Lithium and berylium, and it confused me. ...
Dec16-04 08:38 AM
Bladibla
17 9,022
is it possible to separate oxygen from air? in other words, getting pure oxygen from air
Jun11-11 04:14 PM
scdriver22
14 9,008
I understand that microwaves cause water in food to heat up, but I don't understand why it is only water. Why won't...
Dec27-10 12:51 PM
microwaveguru
6 8,988
As i know chemical bonding can be considered as a spectrum of bond ranging from covalent to ionic. Now can we say that...
Dec12-13 05:41 PM
DrDu
10 8,975
Something has always mystified me about swimming pool care. Why is it that owners need to keep adding chlorine...
Nov26-09 02:26 PM
chem geek
7 8,967
When looking at the "shiny ball" models of a caffeine molecule, I notice that it terminates in 3 places with a carbon...
Feb4-12 07:57 PM
tony873004
6 8,964
Hello Everyone, I'm reviewing for my chem 12 midterm and just came accross a question that i'm not sure about. If...
Jan28-05 08:33 PM
GCT
5 8,953
Our Chem AP teacher is looking for a cool chem project that we can do (preferably in groups). The reason being that...
Dec8-05 10:55 AM
movies
12 8,951
Please show me the derivation for the formula relating Gibbs free energy change and the reaction quotient. I didn't...
Apr21-11 02:22 PM
kotreny
11 8,943
for my titration at school i need to create a sodium carbonate solution do i need to heat up the water or can i...
Mar20-08 12:36 PM
JGK
3 8,916
Hi. I'm having a hard time solving this problem. I have to find the identity of element X in the following...
Nov29-04 10:09 AM
philistinesin
3 8,913
Hi, I carried out a couple of experiments with unknown group 2 salts; X and Y I added dilute NaOH to each of the...
Nov17-07 02:41 PM
Kushal
4 8,913
need help fast as coursework needed to handed by this monday
Mar20-09 03:03 PM
chemisttree
4 8,906
H2(g) + I2(g) = 2HI(g) T = 731K K = 49.0 If at equilibrium 0.171 mol H2 and 1.571 mol I2 ...
Mar7-05 09:51 AM
GCT
2 8,894
Example: Take a hydrogen atom and make it a carbon atom. Can we do it with our current technology? If so, how...
Sep6-10 02:20 AM
DrDu
7 8,893
can any1 help me????...does any body know how to do retro synthetic analysis????
Nov2-04 05:17 AM
suf7
8 8,888
I've been trying to find a definitive answer to this question since long, and I still haven't found one! My teacher...
Jan14-09 07:47 AM
Mapes
6 8,885
i cannot get this i have read through texts, and have made probably incorrect postulates of my own on the matter but...
Aug9-05 05:37 PM
professor
7 8,828
I've been looking at phase diagrams and vapour pressure tables for CO2 and i notice that the data stops at the...
Aug15-09 01:58 PM
TrentFGuidry
7 8,815
How could someone roughly calculate flame temperature? Lets say that a chemical reaction occurs at 1000F and the...
Sep1-10 01:43 PM
Topher925
4 8,809
Greetings ! I have a little question. My teacher was talking about stable ions some days ago, he wanted to explain...
Nov27-08 12:57 PM
qatadah
13 8,797
I am chem major currently taking organic chemistry. I am ashamed of admitting I hate organic chemistry. This is not...
Apr23-12 02:09 PM
turbo
24 8,784
Hi guys, I have a quick question on this checmical, Polybutene. At my plant, we are having a pigeon problem in one of...
Nov13-08 10:19 AM
Simon_Moore
6 8,783
how do you know if a reaction will take place or not like i know that i have to use the activity series and all but...
Jun19-10 10:48 AM
alxm
1 8,782
Can someone help with these questions: a)Silver nitrate is added to a solution and a precipitate forms. This...
Apr7-09 03:14 AM
alxm
4 8,778
I need some help, in explaining how to know what kind of d-metal complex a molecule is. For example, I have: 1. 2+...
Dec14-09 06:31 PM
zlidziej
3 8,775
According to my text book,inert pair effect has two definitions 1:-The occurence of oxidation state which is two...
Mar5-10 11:18 AM
Char. Limit
1 8,763

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