Chemical Forums
Specialty Chemistry Forums => Nuclear Chemistry and Radiochemistry Forum => Topic started by: tashkent on November 29, 2004, 08:03:54 AM

Greetings everyone!
I would like to ask for any online links for Nuclear Chemistry? I have been boggled by a certain Nuclear Chemistry problem. For example, you're given a certain nuclear activity of 2000 cpm for a mass of 50 mg, and 500 cpm for a mass of 60 mg. Then you are asked for the mass of the original sample? I saw from the Mortimer book the formula: No/N = (activity)0/(activity), but I can't figure out a formula of finding for the mass of the original sample. I'm trying to solve it without using a calculator...
Hope you can clear this up guys. Thanks.
Regards,
Tashkent

I'm not too sure. How about working from basic principles?
dN/dt = kN where N is number of radioactive nuclei, k: constant

You could go to Google and search for it...
Here's one anyway!
chemcases.com/nuclear/ (http://chemcases.com/nuclear/)

Its just starting, but http://groupsbeta.google.com/group/NuclearChemistry/