Determine the energy value for the combustion of butane, using the bond energies from the table. Respond in terms of the energy value (not the enthalpy change, the sign is important here). Answer to 3 significant figures in units of kJ/mol. C 4H 10 + 6.5O 2 → 4CO 2 + 5H 2O

Bond Bond Energy (kJ/mol)
H–H 432
O=O 494
O–H 460
C–H 410
C–O 360
C=O 799
C≡O 1071
C–C 347
C=C 611
C=C, aromatic 519
N=O 623
N≡N 941