The standard molar enthalpy and entropy of fusion for benzoic acid are 18.02 kJ/mol and 45.56 J/mol K, respectively. What is the entropy change in the universe if one mole of benzoic acid melts in a large reaction container maintained at 150°C? Express your answer in J/K.

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices