Chapter 18, Problem 56QAP

Interpretation Introduction

Interpretation:

The mass of Am-241 present in the detector needs to be determined.

Concept introduction:

The relation between decay constant, number of atoms and activity is shown as follows:

$N=\frac{A}{k}$

Here, k is decay constant and A is activity.

The mass of a substance can be calculated from number of moles and molar mass as follows:

$m=n\times M$

Here, n is number of moles and M is molar mass.