Liquid Solution

A solution of nonvolatile solute is obtained by dissolving \(15 \mathrm{~g}\) in \(200 \mathrm{~mL}\) water has depression in freezing point \(0.75 \mathrm{~K}\). Calculate the molar mass of solute if cryoscopic constant of water is \(1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\).