5 mg of contains (15.6% of sample) and atoms

CHEMISTRY · Subjective · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear

Problem

5 mg of

\text{Na}_3\text{PO}_4

contains

\text{P}^{32}

(15.6% of sample) and

\text{P}^{31}

atoms. Assuming only

\text{P}^{32}

atoms radioactive, calculate the rate of decay for the given sample of

\text{Na}_3\text{PO}_4

. The half-life period for

\text{P}^{32} = 14.3 \text{ day}

; molar mass of

\text{Na}_3\text{PO}_4 = 161.2