# What is the molality of a solution containing 18 grams of solute in in 0.5 kg of solvent?

Apr 17, 2017

#### Answer:

Unknown............

#### Explanation:

$\text{Molality"="Moles of solute"/"Kilograms of solvent}$.

We have the mass of the solute. We do not know what it is and thus we cannot calculate its molar quantity, and thereby its molal concentration remains inaccessible.

"Molality"=((18*g)/("Molar mass of solute"))/(0.5*kg)=??*mol*kg^-1.