Use the reaction equation and bond energies to answer the question.
2H20 - 2H2 + 02
H-O: 467 kJ/ mol
H-H: 432 kJ/ mol
0=0: 498 kJ/ mol
What is the total energy of the reaction? Is this an endothermic or exothermic reaction?

A. -506 kJ/ mol, exothermic
B. 506 kJ/ mol, exothermic
C. -506 kJ/ mol, endothermic
D. 506 kJ / mol, endothermic