chemistry
posted by Ronnie .
when 10.0 grams of an unknown substance is dissolved in 50. grams of water, the new freezing point becomes 3.00C. What is the molar mass of the compound?
For this question can some one tell me the formulas I need to solve for this problem and I can fill in the rest

delta T = Kf*m
m = moles/kg solvent
moles = g/molar mass