Through the process of transpiration, plants a. break down sugar for energy. b. absorb sunlight to produce energy. c. transfer pollen grains to their stigma. d. lose water through their leaves.

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?