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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
64 157,915
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
116 150,689
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 41,874
Okay, I'm working on some pchem problems and I'm stuck on this one question... A 5.33g piece of Cu metal is heated...
Dec8-04 10:16 PM
soaring206
2 9,766
Dear Fellow Members, If we have been given an unknown compound.We even don't know that it...
Jan19-14 08:56 AM
Yanick
3 522
On my test the professor gave us the rate, parameters of A, and temperature of 298K. We were asked to find the...
Nov25-11 01:03 PM
jtruth914
2 2,194
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 1,324
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 1,844
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 6,652
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 2,057
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 1,495
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 1,606
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 4,467
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 1,954
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 2,522
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 42,070
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
3 487
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 4,481
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 1,297
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
0 869
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
16 990
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 4,209
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 2,682
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 3,705
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 6,280
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 1,873
Hi everyone, I need to evaluate parameters (heat capacity, density and thermal conductivity) for some very humid...
Jun30-10 01:14 PM
Expi
1 1,173
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 2,595
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 1,121
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 2,374
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 1,003
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 2,136
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 4,401
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 1,557
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 1,388
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 1,756
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 2,128
Are there any chemical compounds that include carbon as diamond?
Feb15-08 03:54 PM
chemisttree
4 3,409

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