4.3 The radioactive cobalt isotope, "Co, has an half-life of 63 months and undergoes decay. The molar mass of 6°Co is 59.9338222 amu. A sample initially contains 48 mg of 6"Co. (a) Calculate the number of moles of 6Co that are left in the sample after 5.0 years. (b) Calculate the activity of 6Co after 5.0 years, in units of per month (month-).

4.3 The radioactive cobalt isotope, "Co, has an half-life of 63 months and undergoes decay. The molar mass of 6°Co is 59.9338222 amu. A sample initially contains 48 mg of 6"Co. (a) Calculate the number of moles of 6Co that are left in the sample after 5.0 years. (b) Calculate the activity of 6Co after 5.0 years, in units of per month (month-).

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter13: Nuclear Structure

Section: Chapter Questions

Problem 3P

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