Which statement regarding combustion of a sample of gasoline in a bomb calorimeter is correct?

Question

Quizplus · Accepted Answer

In a bomb calorimeter, the combustion occurs at constant volume, meaning no work is done (since work in thermodynamics is often associated with a change in volume, $W = -P\Delta V$). Therefore, the calorimeter measures the change in internal energy ($\Delta U$) directly, not the change in enthalpy ($\Delta H$), which includes both $\Delta U$ and the work done at constant pressure.

Which Statement Regarding Combustion of a Sample of Gasoline in a Bomb