The bond enthalpy of H2O and OH are 502 KJ mol-1 and 427 KKJ mol-1. Then what is the average bond enthalpy?

The bond enthalpy of H2O and OH are 502 KJ mol-1 and 427 KKJ mol-1. Th

1.	The bond enthalpy of H₂O and OH are 502 KJ mol^-1 and 427 KKJ mol^-1. Then what is the average bond enthalpy?
A.	502 KJ mol<sup>-1</sup>
B.	464.5 KJ mol<sup>-1</sup>
C.	427 KJ mol<sup>-1</sup>
D.	75 KJ mol<sup>-1</sup>
Answer» C. 427 KJ mol<sup>-1</sup>