naturally occuring cobalt

Question

chemistry

 

Naturally occurring cobalt consists of only one isotope, 59Co, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt, 60Co, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.6765 g sample of cobalt has an apparent "atomic mass" of 58.9901.

Answer 1

You do not have any question in this statement, Marisol.  There is something missing.