Determine the mass

CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance

Problem

Determine the mass, in grams, of potassium nitrate, KNO

_3

(molar mass

101.1\,\text{g}\,\text{mol}^{-1}

), required to prepare

250\,\text{mL}

of a

0.100\,\text{M}

KNO

_3

solution.