Chapter 21, Problem 37E

Interpretation Introduction

Interpretation: The time that is necessary to replace the cobalt-60 is to be stated when the original sample was purchased in June 2013.

Concept introduction: For a radioactive substance, the half-life is a characteristic constant that measures the time required for a given substance to reduce half of its atom in the reaction as a consequence of decay. The half-life depends upon the substance involved in a reaction.

To determine: The time that is necessary to replace the cobalt-60 when the original sample was purchased in June 2013.