Chapter 9, Problem 58E

The combustion of $\text{0}\text{.1584 g}$ benzoic acid increases the temperature of a bomb calorimeter by $\text{2}\text{.54°C}$ . Calculate the heat capacity of this calorimeter. (The energy released by combustion of benzoic acid is $\text{26}\text{.42 kJ/g}$ .) A $\text{0}\text{.2130-g}$ sample of vanillin $\left({\text{C}}_{\text{8}}{\text{H}}_{\text{8}}{\text{O}}_{\text{3}}\right)$ is then burned in the same calorimeter, and the temperature increases by $\text{3}\text{.25°C}$ . What is the energy of combustion per gram of vanillin? Per mole of vanillin?