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Consider the following date

Heat of combustion of H2(g) = -241.8 kJ mol-1

Heat of combustion of C(s) = -393.5 kJ mol-1

Heat of combustion of C2H5OH(1) = -1234.7 kJ mol-1.

The heat of formation of C2H5OH(1) is (-) ____ kJ mol-1 (Nearest integer)

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Best answer

Correct answer is 278

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