When a catalyst is added to a reaction mixture, it Group of answer choices increases the rate of collisions between reactant molecules. None of these choices are correct. provides reactant molecules with more energy. provides a new pathway (mechanism) for the reaction. slows down the rate of the back reaction.

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.