Chapter 7, Problem 64E

Determine whether $\Delta H$ is equal to, greater than, or less than $\Delta U$ for the following processes. Keep in mind that "greater than" means more positive or less negative, and "less than" means less positive or more negative. Assume that the only significant change in volume during a constant pressure process is that associated with changes in the amounts of gases.
a. The complete combustion of one mole of butan-1-ol.
b. The complete combustion of one mole of glucose, ${\text{C}}_{\text{5}}{\text{H}}_{\text{12}}{\text{O}}_{\text{5}}\left(S\right)$ .
c. The decomposition of solid ammonium nitrate to produce liquid water and gaseous dinitrogen monoxide.