A 100-G Sample of Octane (C₈H₁₈)is Burned in a Bomb Calorimeter

Multiple Choice

A 1.00-g sample of octane (C₈H₁₈) is burned in a bomb calorimeter that has a heat capacity of 5.80 kJ/°C.The temperature of the calorimeter rises from 25.00°C to 33.20°C.What is ΔU per mole for the combustion of octane?

A) -47.6 kJ/mol
B) -416 kJ/mol
C) -707 kJ/mol
D) -5.43 ×10³ kJ/mol
E) -1.86 ×10⁵ kJ/mol