Chapter 19, Problem 40E

Interpretation Introduction

Interpretation: Half-life of phosphorus- $32$ and the mass of a sample of ${\text{Na}}_{\text{3}}{}^{\text{32}}{\text{PO}}_{\text{4}}$ is given. By using these values, the mass of phosphorus left after $35.0$ days is to be calculated.

Concept introduction: In radioactive decay, the decomposition of a parent nuclide takes place and a new daughter nuclide is formed. Phosphorus- $32$ is a commonly used radioactive nuclide in biochemical research.

To determine: The mass of phosphorus left from an original sample of ${\text{Na}}_{\text{3}}{}^{\text{32}}{\text{PO}}_{\text{4}}$, of the given mass, after $35.0$ days.