What is the initial activity of a 5 g radioactive source of 60Co given that the specific activity of 60Co is 4.8 x 1016 Bq/kg? How many decays per second does this correspond to? After twenty years what activity does this source still provide if 6ºCo has a half life of 5.3 years?

What is the initial activity of a 5 g radioactive source of 60Co given that the specific activity of 60Co is 4.8 x 1016 Bq/kg? How many decays per second does this correspond to? After twenty years what activity does this source still provide if 6ºCo has a half life of 5.3 years?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

What is the initial activity of a 5 g radioactive source of 60Co given that the
specific activity of 6⁰Co is 4.8 x 1016 Bq/kg? How many decays per second
does this correspond to? After twenty years what activity does this source
still provide if 6⁰Co has a half life of 5.3 years?
What is the initial intensity, I, of the 5 g 6⁰Co source at a distance of 1m if the
gamma rays emitted by 6ºCo have an average energy of 1.9 x 10-1³ J?

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