find the freezing point of a solution containing 3 grams of a compound of molar mass 125 g/mol in 45 g of camphor
mols = grams/molar mass.
Substitute and solve for mols.
m = molality = mol/kg solvent
Substitute and solve for m.
delta T = Kf*m
Substitute and solve for delta T.
Then subtract delta T from the normal freezing point of camphor.