In the chemical reaction N²O⁴ --> N²+2 O², the bond enthalpy of the reaction is 1779 kJ and the bond enthalpy of the product is 1931 kJ. what is the enthalpy of the reaction? please explain your work, and no links​

The activation energy for this reaction is 75 kj·mol–1. the enzyme catalase (found in blood) lowers the activation energy to 8.0 kj·mol–1. at what temperature would the non-catalyzed reaction need to be run to have a rate equal to that of the enzyme-catalyzed reaction at 25°c?