Use average bond energies (table in the hint) to compare the combustion energies of ethane, ethylene, and acetylene. Calculate which of these hydrocarbons releases the most energy per gram.

These estimates indicate that releases slightly more energy per unit mass than others. Remember that average bond energy calculation provide estimates, not exact values

AE(per gram ethane) AE(per gram ethylene) AE(per gram acetylene) kJ/g kJ/g kJ/g