Chapter 9, Problem 9.45AP

Interpretation Introduction

Interpretation:

The half life of a radioactive sample has to be given.

Concept Introduction:

Half life:

The half life of a radioactive substance is a measure of time taken for a given amount of the substance to reduce as an effect of decay.

Half life of a radioactive element is given by,

  ${\text{t}}_{\text{1/2}}\text{=}\frac{\text{t×0}\text{.6931}}{\text{ln}\left(\frac{{\text{M}}_{\text{o}}}{{\text{M}}_{\text{t}}}\right)}$

Where t is the time taken for decay.

${\text{M}}_{\text{o}}$ is the mass of the sample at initial level.

${\text{M}}_{\text{t}}$ is the mass of the sample after time.