When a 3.80-g sample of liquid octane (C₈H₁₈) is burned in a bomb calorimeter, the temperature of the calorimeter rises by 27.3 °C. The heat capacity of the calorimeter, measured in a separate experiment, is 7.18 kJ/°C. Determine the ΔE for octane combustion in units of kJ/mol octane.

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a) -5.07 x 10³ kJ/mol c) -44.4 x 10³ kJ/mol b) 5.07 x 10³ kJ/mol d) -16.7 x 10³ kJ/mol