A reaction has an activation energy of 40 kJ and an overall energy change of –100 kJ. What is the activation energy, Ea, for the reverse reaction?

What is the relationship of air masses and the temperature of oceans?

Define the kinetic molecular theory

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d