The complete combustion of 2.500 g of cinnamaldehyde C9H8O, 132.16 g/mol), which is a component in cinnamon, produces an increase in temperature of 26.65 C in a bomb calorimeter (Ccal = 3.640 kJ/ C).What is the molar internal energy ( E) of combustion of cinnamaldehyde in kJ/mol?
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