A 0.016076-mol sample of an organic compound was burned in oxygen in a bomb calorimeter. The temperature of the calorimeter increased from 23.7oC to 24.5oC. If the heat capacity of the calorimeter is 4.98 kJ (oC)-1, then what is the constant volume heat of combustion of this compound, in kilojoules per mole? (Remember to include a "+" or "-" sign in your answer, as appropriate.)

1 answer

Qv = Ccal x specific heat
That gives you Qv/0.01607 mol. Convert to 1 mol Add the appropriate sign. T increased meaning heat was emitted meaning dH is - and exothermic.