Question

a sucrose solution was prepared by dissolving 13.5g sucrose in enough water to make 100ml of solution. the density is 1.050gml. calculate molality

Answer 1

13.5 g sucrose/molar mass = moles

convert 100 mL to mass.
mass = volume x density
mass = 100 mL x 1.050 g/mL = ??g and convert to kg.
Then molality = moles/kg solvent.

Answer 2

how do i get the mole fraction?