WebElements

the periodic table on the WWW. Up and running since September 1993

Open Access Chemistry Journals

Could anyone please tell me the list of Open Access Chemistry Journals and those publilshers?

greetings from thoson

Hello all,
I am Thomson from USA,The world around us is made of materials of all kind. In future, the role of materials in the human society will undergo more drastic changes. In fact, this change has already started. Understanding how materials work, what gives materials the properties that they have and how wonderful, new materials can be synthesized will form one of the major focuses of science and engineering in the coming years.

Colored and Colorless Salt SOlutions

I'm trying to do my post-lab for a lab that is trying to get us to figure out if solution color is predictable from its interaction with visible light and the atomic structure of the salt's metal ion. We mixed different nitrates with water and then looked at its color and absorbency. I just want to know how the valence shell electron configurations would effect the color. Iron nitrate is yellow, Cobalt nitrate is red, nickel nitrate is green and copper nitrate is blue. They're all in a row, but I don't know why Zinc is colorless when it is right next to the colorful solutions.

sodium

blog and post comments about sodium here will check daily if blogging here please add me to ur contact list ty

Number of elements present in the periodic table

Can someone tell me what is the total number of elements present in the periodic table? Some say it is 114, Others say it is 118 . There are still others who claim the number to be 122. Justify your answer giving reasons.

Number of elements present in the periodic table

Please let me know what is the total number of elements present in the periodic table? Some say it is 114, Others say it is 118 . There are still others who claim the number to be 122. Justify your answer giving reasons.

Recent articles and other publications on the Periodic Table

An article appeared in the British chemistry magazine, 'Chemistry World'
recently, entitled Periodic Change, by Eric Scerri. In it Scerri reviews the alterantive periodic tables currently available and explains the main categories of periodic systems. see his website for other titles
http://faculty.chemistry.ucla.edu/institution/personnel?personnel%5fid=294334
Another article is by Michelle Francl in the new journal 'Nature Chremistry' issue 2. This is titled 'Table Manners'. Also, Eric Scerri Selected Papers on the Periodic Table, Imperial College Press, 2009.

chemistry

the question is;

in an equilibrium mixture of reactants and products at 400 degrees celsius,in a steel vessel with volume 10 dm cube,there were 2.0 mol of ammonia,5.5 mol of nitrogen and 5.0 mol 0f hydrogen.

calculate equilibrium constant at this temperature?

Chemistry Software

Hey everyone. I really only joined this forum for one, well, two reasons. Firstly, Id like to ask for help and ideas with a project im working on. It's an application that can solve equations and do conversions. (not like an ordinary calculator, though) It also can do a number of other things.. ..has a periodic table, a standard calculator, a journal, etc. My second reason was to show off what I have a little bit. Just a little, though. :]

Help Plz!!!!!

Ok I am in AP Chemistry 2 and I have no clue what I am doing... so can someone help me with this problem??

Hexamethylenetetramine was used for the treatment of kidney and bladder infections prior to the development of modern antibiotic drugs. Combustion of 0.2897 g of this compound produced 0.5456 g of CO2 and ).2234 g of H2O. Separate nitrogen assay of a 0.3801 g sample yielded 0.1848 g of ammonia. What is the empirical formula of this compound?

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