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- 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
64 157,761
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
116 150,502
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 41,832
Hello everybody, I want to determine the extinction coefficients of Fe2+ and Fe3+ in glass. There are literature...
Sep6-13 03:26 AM
ACvub
13 1,321
How would I determine, if given a chemical equation is exothermic or endothermic? Eg. Mg + 2HCL\rightarrowMgCl2 + H2
Feb23-13 10:24 AM
Ygggdrasil
2 1,841
Hey , I still do not understand how to determine the activation energy for the reverse reaction when you are given...
May10-05 11:58 AM
GCT
1 945
So, I've extracted a small amount of (hopefully) caffeine from coffee via solvent extraction with hexane. Quick note...
Jun30-11 12:17 AM
chemisttree
3 6,639
This is a topic that I simply know very little about. The question is asking me to determine the pKa value from the...
Sep15-07 12:09 AM
Mitchtwitchita
2 2,055
How does one use various liquids and their unique densities to determine the pressure of a gas in a manometer?
Jan21-05 02:33 PM
z-component
4 1,493
Hi guys, I am doing a lab experiment which involves analysis of a sample of a mixture of NaCl and KCl. I'm using...
Oct17-12 05:13 PM
Borek
5 1,603
I know how to do it one way, which is write down the chemical formula, balance it, and from the molarity of the...
Feb17-09 06:14 AM
Fragment
2 4,465
the problem im working with is: Naphthalene is a carbon-hydrogen compound that finds use as mothballs. A sample of...
Jun9-12 02:26 AM
Borek
6 1,951
If I know the percentage by weight of elements in a formula I can calculate the relative ratios of atoms in the...
Aug7-11 09:47 AM
Redbelly98
1 2,520
I know its a rather simple question but if you think about it, it requires much knowledge of d orbital. Is there an...
Apr15-08 02:40 AM
LtStorm
1 42,054
Does there exist a fool-proof way of doing it? I've scoured the forums, and I've already found this question, but...
Jan24-14 03:31 PM
Borek
3 484
if one were to electrictally produce Cl from salt solution how would you tell when all the salt was electroliticaly...
Jul27-07 02:12 PM
chemisttree
19 4,476
This question may sound a bit odd, but is there a relatively simple way(by simple, I mean inexpensive) to determine...
Jul6-12 07:35 PM
MrSid
2 1,295
Hi I need to compare solid working with \frac{1}{2}O_{2}+H_{2}O+2e^{-} \rightarrow 2OH^{-} and...
Dec19-12 04:28 PM
boddhisattva
0 865
Hi, I've recently made some very budget homemade 'beer', butt i'm wondering is there an easy (doesn't have to be...
Jan15-14 04:12 PM
snorkack
16 985
Is there any way to predict how two chemicals will react or is it up to experimentation to discover that? Take salt...
Jul18-09 06:06 PM
Borek
3 4,200
I want to determine whether a solvent layer has water or not. (have: solvent layer + unknown compound(s) dissolved in...
Apr30-09 03:39 PM
chemisttree
10 2,675
How can you determine the ratio of the keto tautomer of a compound to its enol form? I know which functional groups...
Oct30-10 05:19 PM
DDTea
4 3,703
What is the molecular formula of a compound which contains 92.3% carbon and 7.7% hydrogen by mass, if 0.39g of its...
Nov15-04 02:26 AM
chem_tr
4 6,277
I have some field chambers buried in the soil at work here and we collect soil emissions from them at regular...
Feb15-11 09:00 AM
SoilTech
0 1,872
Hi everyone, I need to evaluate parameters (heat capacity, density and thermal conductivity) for some very humid...
Jun30-10 01:14 PM
Expi
1 1,171
I need to create a procedure for doing what the title says. I have researched online, but have not found any way (I...
Feb12-10 03:16 PM
chemisttree
6 2,590
I am in search of a way of determining the colurs of transition metal. Is there any way to find their colours without...
May22-04 03:11 AM
thunderfvck
1 1,464
What is the equivalent weight of ozone molecule? I mean how can I find out the equivalent weight of molecules? Is...
May25-13 06:25 AM
ChiralWaltz
6 1,119
I am trying to figure out how you can get the formula of a compound when you are given mass spec data. The mass...
May3-10 02:35 PM
chemisttree
1 1,745
Lets say I need to predict the number of infrared absorbance peaks that will appear on the IR spectrum of a given...
Jan3-12 04:45 PM
CrimpJiggler
0 2,370
Heres the question: http://img442.imageshack.us/img442/484/sarr.png Firstly does anyone know what Ki is? Ionisation...
Jul27-12 01:18 PM
Ygggdrasil
1 674
In reverse osmosis of salt water, the mesh size in filter determines the size of particles dissolved in the solution...
Oct12-12 09:02 AM
bhaazee
2 1,001
Hello, This is a matter I have been having some difficulties with for the past few days. My question: How is it...
Oct14-11 03:08 AM
DrStupid
1 2,126
How do i find out which substance has a higher boiling point. Which substance has the higher boiling point?...
Mar9-04 12:02 PM
BLUE_CHIP
2 4,392
Hello all, I am an amateur science fiction writer and am currently working on a novel. I am exploring the...
May13-10 01:45 AM
connectivity
2 1,556
how can i tell if a molecule is dextorotory or levorotory by looking at the 3-d presentation? any thoughts!
Oct27-09 12:19 PM
chemisttree
2 1,387
what happens if u accidentally use regular water to dissolve something u want to electrodeposit later instead of using...
Oct3-09 05:21 AM
Borek
3 1,754
Are there any known materials that will retract significantly when an electric current is run through it? I mean will...
Dec6-05 09:20 PM
scott_alexsk
2 1,209
I heard something that I adopted as a rule some years ago: "Every combustion produces H2O and CO2". I used it blindy...
Oct9-12 06:32 PM
Weissritter
8 2,120
Are there any chemical compounds that include carbon as diamond?
Feb15-08 03:54 PM
chemisttree
4 3,403
Diamond has a tetrahdral shape stucture, an allotrope of carbon with each carbon covalently bonded to 4 others. ...
May13-05 02:50 AM
Gokul43201
1 1,661
An interesting article. Scientists discovered that millions of microscopic diamonds are created and destroyed inside...
Aug21-11 06:56 AM
Constantinos
0 1,393
The bond enthalpies for these bonds are: C-C 347 kJ/mol C-N 276 kJ/mol C-O 351 kJ/mol Why is carbon-nitrogen...
Apr8-14 07:52 AM
sludger13
25 1,310

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