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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/...
May7-14 10:06 PM
Awheezi
115 141,933
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
64 150,676
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:03 PM
chemisttree
0 40,037
How do electrons revolve around in molecule bonded by covalent bonds? An electron revolves around one nucleus. But if...
Oct6-11 08:29 AM
Bloodthunder
5 3,336
Hello everybody, I am going to face an exam and I am learning Chemistry. I am confused with the term Subshell ....
Oct5-11 10:55 PM
Bloodthunder
1 1,489
If its possible at all
Oct5-11 10:54 PM
Bloodthunder
1 3,751
Hydrogen is such a peculiar element. It is placed in Group 1 of the periodic table. I can't find the reason why is it...
Oct5-11 08:09 AM
Borek
4 1,566
How come polyatomic ions--for instance, sulfite and sulfate--have the same net charge?
Oct4-11 09:36 PM
Bloodthunder
1 1,670
I was reading my book on Inorganic Chem and I came across this compound that is part of a complex: B(C6F5)4. The book...
Oct4-11 03:36 PM
DrDu
1 1,131
After you find the irreducible representation of a molecule, how do you determine the number of IR active bands? ...
Oct4-11 04:41 AM
DrDu
1 2,035
is it possible to have a triple replacement type reaction? I know of single and double replacement but what if you...
Oct3-11 12:12 PM
Borek
3 2,928
Does CN neutral exist? if it will their will be a triple bond but their will be 1 single electron left in the carbon...
Oct2-11 10:13 AM
cgk
2 1,586
jk, ignore this.
Oct2-11 10:12 AM
derppe
2 799
What method do you use to pair up with a partner or multiple partners when taking a chemistry course? What is it...
Oct1-11 10:26 AM
Mororvia
4 2,025
My mate and I are neutralizing (what we think is) a 2.5 gallon carboy of 10% HNO3 and 1% HF solution. Reason: We...
Oct1-11 01:51 AM
Dr_Morbius
4 2,476
hi there,:) im just wondering, when balancing equations, because oxygen is a diatomic molecule, when it is in a...
Sep30-11 11:42 PM
Dr_Morbius
8 2,069
Hello, I've searched around the internet, but I haven't been able to find an answer to my question. I know that...
Sep30-11 11:35 PM
Dr_Morbius
4 2,796
For my chemistry class, I need to be able to calculate percent abundances for multiples isotopes, if given the mass of...
Sep30-11 04:53 PM
Same-same
2 11,009
Hello, I read that equal volumes of different gas contain the same number of molecules so if I solidify that gases...
Sep30-11 01:26 PM
Sankalp Zeal
7 3,185
Hello, I wouldn't necessarily regard this as homework. While these are errors I believe I have found within an...
Sep30-11 12:28 PM
Mike H
1 1,687
Wikipedia says they are synonymous. Ionization energy is how much energy it takes to abstract an electron from an...
Sep30-11 11:38 AM
Mike H
7 6,505
I am trying to create a solution of Chitosan (Low MW) in 1% Acetic acid. I ve tried dissolving up to 3gr per 100ml...
Sep30-11 07:36 AM
Barret
0 2,645
It looks like my first post on this did not make it on this forum some how. I came across this statement. Even...
Sep29-11 03:01 PM
DrStupid
3 1,300
Hi I want to figure out how to calculate the temperature at which more energy is required to keep hydrogen and...
Sep29-11 10:52 AM
epenguin
8 1,984
good afternoon, good day, is there some logic to assuming that ml/gal is the exact same thing as gal/ml assuming...
Sep29-11 06:29 AM
sjb-2812
3 2,294
If you had a solution of the following zinc benzalkonium chloride glycerin hydroxyethylcellulose purified water...
Sep26-11 02:44 PM
mrwhitee
9 2,578
Hi. I enjoy gardening as a hobby, mainly nicotiana (ornamental tobacco) and medicinal uses of plants. I am not a...
Sep26-11 01:34 PM
givemeaname
10 1,857
I am currently working on an un-named project and have hit a road block. I have a very shaky background in chemistry...
Sep26-11 12:36 PM
DrStupid
30 3,135
I'm a bit confused about how polar molecules can be insoluble in water. Polar means they have a permanent dipole so I...
Sep24-11 12:57 PM
chemisttree
1 2,654
Please forgive me if this is a stupid question; I know embarrassingly little about chemistry. I'm just curious as...
Sep24-11 03:22 AM
Borek
1 1,868
There are so many sources stating that Cadnium is toxic, so why is it put into jewelry that can easily be (and should...
Sep24-11 02:57 AM
Borek
1 1,379
Do single non bonding electrons (i.e. on a free radical) always occupy non hybrid orbitals? For example the methyl...
Sep24-11 02:07 AM
CrimpJiggler
2 1,983
Zinc reacts with sulfuric acid to produce zinc sulfate and hydrogen. But then, when electrowinning zinc, this is...
Sep23-11 05:37 PM
Borek
1 2,210
Hello, in water NaCl break itself into positive and negative ions but i didn't understood how exactly works the...
Sep23-11 09:30 AM
Naty1
8 2,366
In an experiment that I conducted, I was instructed to measure the mass of a substance (NaCl) in it's container BEFORE...
Sep23-11 08:46 AM
Studiot
1 1,759
I am having trouble understanding what exactly happens in an exothermic reaction. Specifically, I need to answer the...
Sep23-11 01:53 AM
michaelplease
0 2,583
Hi, I was conducting an experiment on a material using XRD and I investigated two cases. One case is the presence of...
Sep22-11 07:48 PM
bearcharge
0 835
I do not understand why baking soda is a good absorber of odors. Is it like activated charcoal or something? The...
Sep21-11 08:16 PM
jmnew51
2 1,990
Can someone please explain to me how the irreducible representations of a character table are assigned their letters? ...
Sep21-11 04:52 AM
Me..Sandeep
10 4,265
Main question: What is the name of the 8 coordinate complex pointgroup? Or does it even exist? I've been exposed...
Sep21-11 01:52 AM
DrDu
3 2,405
hello, to preview chemical bonds must be considered only the electrons in the last sublevel and not the electrons in...
Sep20-11 11:05 AM
scientifico
4 1,828
How do you calculate the temperpature at which a covalent bond breaks? Is there a way to do this?
Sep20-11 10:21 AM
OuterGalactic
0 1,272
For example, can Cu2+ be the only ionic species present in an aqeuous solution, without anions such as nitrate....
Sep19-11 06:07 PM
lightarrow
2 2,032

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