Calculate ΔH°f (in kilojoules per mole) for benzene. C6H6, from the following data:
2C6H6(l) + 15O2(g) → 12CO2 (g) + 6H2O(l), ΔH° = -6543.0 kJ
CO2 (g), ΔH° f = -393.5 kJ/mol
H2O(l), ΔH° f = -285.8 kJ/mol
Express the enthalpy change in kilojoules per mole to three significant digits.
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