Solution: 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 radiatio

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 1.7222 g sample of cobalt has an apparent "atomic mass" of 58.9901.

Find the mass of ⁶⁰Co in this sample.