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 (l) = –1234.7 kJ mol–1
The heat of formation of C2H5OH (l) is (–) _________kJ mol–1  (Nearest integer).

Answer: 278
Explanation:

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