The mole fraction of a certain nonelectrolyte compound in a solution containing only that substance and water is 0. The molecular weight of water is...

The mole fraction of a certain nonelectrolytecompound in a solution containing only thatsubstance and water is 0.100. The molecularweight of water is 18.0 g/mol. What addi-tional information is needed to determine themolality of the solution?