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CRS Question, 6–12
ANSWER
Choice 2 indicates the proper sign, value, and
label. The reported – 1 300
kJ is for the combustion of one mole.
After 1.0 gram is properly converted to moles, (1.0/26)
multiplying by –1 300 kJ/mol will yield the answer. The negative sign indicates that heat is released
to the surrounding.
Section
6.2: Enthalpy and Calorimetry