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Jan16-12 Greg Bernhardt
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 41,116
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/...
May7-14 10:06 PM
Awheezi
115 147,666
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
64 155,343
hello, i have no bubbles in distillation of phenylacetone under vacuum, the heat is about 120c, and the vacuum pump...
Dec4-12 10:40 AM
chemisttree
1 717
Hey folks, I'm trying to obtain the melting points of several materials in a vacuum. It's pretty...
Apr17-13 01:50 AM
DrDu
1 717
Hi all, I'm learning how to solve redox equations. I found the algebraic method to solve equations such as this...
Oct23-13 04:15 AM
Borek
1 717
Title says it all. I don`t get it.
Oct20-13 04:56 PM
epenguin
4 717
For a multi-step reaction, how is the rate determining step defined. Is it -the step with the highest activation...
Dec1-13 10:01 PM
VenaCava
0 717
Im going to try my best to write out this chemical equation. Also I'm gonna write a forward arrow but it's really it...
Feb19-14 11:56 PM
kevinnn
0 717
I understand the concept of balancing chemical equations but in the case of redox reactions I don't understand the...
Nov15-13 06:54 AM
Borek
1 718
So I was sitting in my very low level biology class today, and we covered some basic chemical concepts that we will...
Jan18-14 12:27 PM
Mhorton91
6 718
Perhaps I have some mental block with basic algebra (so don't judge me on that), but... Here is a simple high-school...
Feb19-13 04:06 PM
SBob
2 719
I want to know what catalyst is used in the Fischer–Tropsch process to get fuels.
Mar3-13 05:15 PM
Borek
1 719
This is for self study. 1. Why don't some molecules react? For example, NH3 + CaCO3 2. Where can I find a...
Apr16-13 10:09 AM
Yanick
1 719
why are scientists now more concerned about carbon dioxide as a greenhouse gas rather than methane for example? many...
Nov6-13 11:39 AM
SteamKing
1 719
I am attempting to make a ferrofluid display for one of my classes and i am having an issue with clumping. I have a...
Apr16-13 08:10 PM
wsomma
0 720
when we try to measure surface tension of different concentrated solutions of n-butanol with a tensiometer, we have to...
Mar2-14 10:58 PM
256bits
10 720
Hi everyone, this is my first time posting to this website. I'm just trying to study for organic chemistry, and...
Oct29-12 03:01 AM
ochemstudent
0 721
Are all exothermic processes exergonic? What is exactly meant by the term of standard enthalpy of fusion? For...
Jan24-14 06:40 PM
Chestermiller
11 721
Okay this maybe a silly question but I had to ask. In school we are making standard solution to perform a...
Mar1-13 11:25 AM
Borek
2 722
I'm way outside my realm of knowledge here so perhaps I need some help polishing my question or the concepts behind...
Mar22-13 09:26 PM
ChiralWaltz
2 722
I would like to understand under what circumstances rate laws can leave out rate terms from certain reactions, in...
Jan28-14 05:52 AM
epenguin
13 722
What characteristics of a chemical compound or atom make it suitable to be used as an excess reactant.
Nov29-09 12:44 PM
zizdood
1 723
http://i.imgur.com/FCpTz.jpg The correct answer states its C which i understand why since doubling the intiial...
Jul24-12 12:30 PM
pa5tabear
1 724
hi, this might be a stupid question. if so, bear with me. i've been using the following equation in my...
Jun27-13 02:25 AM
Borek
1 724
I have some basic idea about spectroscopy but i cant completely understand how charge transfer inside a molecule...
Nov10-13 08:46 AM
Vivek des
0 724
I am interested to know what a metal's molecular structure is in the following stages: 1) Home from the store 2)...
Apr28-11 02:12 AM
Borek
1 725
Hello does anyone know an easy way to purify methane made from biomass? Im not sure what gases im producing but i know...
Dec12-13 08:19 AM
iwant2beoz
4 726
Hello everyone, This may seem like a weird question, but today I had a discussion with my teacher in which I won't...
Oct23-13 05:43 PM
Borek
1 727
Forgive me as I have no formal secondary education so my actual knowledge of terms and what not is limited but I am...
Nov3-13 01:08 PM
jedishrfu
1 727
I have "5 small pieces" of potassium purchased from Flinn in 1995 in my school's cabinet. I am concerned because the...
Aug22-13 08:47 AM
mishima
0 728
Copper (ii) chloride is a light brown solid, which slowly absorbs moisture to form a blue-green dihydrate. According...
Nov28-13 10:59 PM
khanhhung2512
5 728
Does anybody know electrolyte that doesn't react with ZnO for electrolysis of water? NaOH and KOH is good electrolyte...
Oct10-13 10:14 AM
Borek
3 729
Calculate the pressure exerted by 0.3000 mole of He in 0.2000L container at -25.0^o C a) Using the ideal gas law...
Mar18-10 12:25 PM
chemisttree
1 730
I just have a small question? What is the AcHN structure that attach to the carbon number 2 on malonate ester,...
Dec15-12 03:23 AM
DrDu
1 730
Does anyone know what citation I should use for an academic paper in biochemistry????(like MLA, ALA, or what?)
Sep7-13 05:26 PM
saminator910
3 730
In water ,due to attraction between water molecules and polar solute molecules the solute dissolves. But though alkyl...
Dec2-13 11:23 PM
nil1996
1 730
Could someone offer a pointer to whether I have the right thinking on this, please? The way I see it, the K2CO3...
Jun2-14 03:02 AM
Borek
9 731
Rank the following of increasing solubility in acetone, (CH3)2C=O A. Oxygen B. CH3CH2CH2OH C. HOCH2CH2CH2OH I...
Feb25-13 02:44 AM
sgstudent
0 734
Are electrons negative to anything? Did we notice two different charges and decide to label them like we did with left...
May24-14 09:56 PM
jtbell
2 734
I realized yesterday that I don't know nearly as much as I would like about the physics of phase transitions. How do...
Aug29-12 05:07 PM
chill_factor
3 736
Heres the chiral center: http://gyazo.com/eeee18ca8467ac59bfcf4241cc4f1bcd.png I want to change the chirality of the...
Oct23-13 08:27 AM
gravenewworld
4 736
I think I understand, but I want to make sure. The vapor pressure of a substance is the pressure of the substance...
May14-13 02:48 AM
Borek
1 737

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