Use the reaction equation and bond energies to answer the question. 2H2O → 2H2 + O2 H-O: 467 kJ/mol H-H: 432 kJ/mol O=O: 495 kJ/mol What is the total energy of the reaction? Is this an endothermic or exothermic reaction? A. -509 kJ/mol, exothermic
b. -509 kJ/mol, endothermic
c. 509 kJ/mol, endothermic
d. 509 kJ/mol, expthermic