If the empirical formula of the unknown was C3H2Cl, what is its molecular formula? Freezing point of cyclohexane solutions: Mass of unknown added to solution 1: D. b 72g Additional mass of unknown added to solution 2: Total mass added to solution 2 : Freezing point depression of solution 1: Freezing point depression of solution 2 : Volume of cyclohexane: Mass of cyclohexane: 15.1174g Attach graph of freezing point data if needed to determine freezing point Freezing point trial 1: 6.C Freezing point trial 2: Average Freezing point