# What is the molality of a solution that contains 5.10 mol KNO_3 in 4.47 kg water?

$\text{Molality}$ is an alternative measure of concentration. It reports amount of solute per unit MASS of SOLVENT.
$\frac{5.10 \cdot \text{moles}}{4.47 \cdot k g}$ $\cong$ $1.00$ $m o l \cdot k {g}^{-} 1$