Chapter 24, Problem 24.118P

Interpretation Introduction

Interpretation:

Time required for $\text{1}\text{.0 mrad}$ of ${}^{\text{222}}\text{Rn}$ radiation to get absorbed in a $54\text{ lb}$ child’s has to be determined using the given information.

Concept Introduction:

Mass of a substance can be determined from molar mass as given,

  $Mass\text{ = No}\text{. of moles}\times \text{Molar mass}$

Unit conversion:

$Specific\text{ activity }\left(in\text{ Ci/g}\right)\text{= }No.\text{of disintegrations per second}\times \frac{1\text{ Ci}}{3.70\times {10}^{10}\text{ d/s}}\times \frac{1}{Mass}$