Suppose a student creates a solution by dissolving 0.5095 g of a non-dissociating, non-volatile unknown solute in 15.58 g cyclohexane. The freezing point change is -2.0 Celsius.
a. Calculate the number of moles of solute in the solution
b. Calculate the molar mass of the solute. Which one of the p-dihalobenzenes could this unknown be (p-difluoro-, p-dichloro, p-dibromo-, or p-diiodobenzene)?