Chapter 24, Problem 24.45P

Interpretation Introduction

Interpretation:

Number of disintegration of ${}^{40}K$ taking place in $8\text{ oz}$ of cow’s milk has to be determined using the given information.

Concept Introduction:

Unit conversion:

  $\begin{array}{c}\text{Specific activity:}\\ \\ \text{1 Ci = 3}{\text{.70×10}}^{\text{10}}\text{ disintegrations per second}\text{.}\end{array}$

  $\begin{array}{l}1\text{ min = 60 s}\\ \\ \text{1 L = }\left(\text{1}\text{.057 qt}\right)\left(\frac{4\text{ cups}}{1\text{ qt}}\right)\left(\frac{8\text{ oz}}{1\text{ cup}}\right).\end{array}$