Chemistry - Concentration Terms Question with Solution | TestHub

Hint: $\begin{array}{rl}\text{ Molality }& =\frac{{\mathrm{x}}_{\mathrm{EtOH}}}{{\mathrm{x}}_{{\mathrm{H}}_2\mathrm{O}}}\times \frac{1000}{{\mathrm{MW}}_{\text{solvent }}}\\ & =\frac{0.08}{0.92}\times \frac{1000}{18}\\ & =4.83\mathrm{mol}{\mathrm{kg}}^{-1}\end{array}$