Chapter 10, Problem 10.80E

Interpretation Introduction

Interpretation:

The time required for a $40\text{g}$ sample of potassium-$40$ in a rock sample to reduce to $10\text{g}$ is to be predicted.

Concept introduction:

The time required for the concentration of the reactant to reduce to half of its initial concentration gives the half-life of the reaction. The half-life of the reaction depends on the initial concentration of the reactant except for the first order reaction.