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October 23, 2014

Homework Help: chemistry

Posted by Candace on Saturday, June 30, 2012 at 4:22pm.

Naturally occurring cobalt consists of only one isotope Co59 whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt Co60, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.8516 sample of cobalt has an apparent "atomic mass" of 58.9901.Find the mass Co60 of in this sample

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