# 49.8 grams of KI is dissolved in 1.00 kg of solvent. What is the molality?

Jul 28, 2014

The molality of a solution is calculated by taking the moles of solute and dividing by the kilograms of solvent.

molality = number of moles of solute/ mass of solvent in kg

number of moles of KI = mass of KI / molar mass of KI

number of moles of KI = 49.8 g / 166.0 g $m o {l}^{-} 1$

number of moles of KI = 0.3 moles

molality = 0.3 moles / 1kg

molality = 0.3 mol $k {g}^{-} 1$