he enthalpy change for the following reaction is -802 kj. using bond energies, estimate the c-h bond energy in ch4(g). ch4(g) 2o2(g)co2(g) 2h2o(g) kj/mol
a) -402 kJ/mol
b) -100.5 kJ/mol
c) -201 kJ/mol
d) -50.25 kJ/mol