Please help! Very important. Brainliest to correct. The diagram shows the potential energy changes for a reaction pathway. (10 points)

Part 1: Describe how you can determine the total change in enthalpy and activation energy from the diagram, and if each is positive or negative.

Part 2: Describe how the curve will look if the reaction was exothermic. Be sure to mention changes in the potential energies of the reactants and products and the sign changes of the enthalpy.