How does an increase in reactant concentration affect the rate of reaction A.) it leads to more frequent collisions, which increase reaction rate
B.) it leads to less frequent collisions, which increase reaction rate
C.) it leads to more frequent collisions, which decrease reaction rate
D.) it leads to less frequent collisions, which decrease reaction rate

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.