Chapter 9, Problem 9.97PAE

9.103 One reason why the energy density of a fuel is important is that to move a vehicle one must also move its unburned fuel. Octane is a major component of gasoline. It burns according to the reaction

   ${\text{2C}}_{\text{8}}{\text{H}}_{\text{18}}(\mathcal{l})+25O_2\left(\text{g}\right)\to {\text{16CO}}_{\text{2}}\left(\text{g}\right)+{\text{18H}}_{\text{2}}\text{O}\left(\text{g}\right)$

$\Delta \text{H}°$ = $-\text{1}.\text{1}0\times \text{1}{0}^{\text{4}}$ kJ

Starting from this thermochemical equation, describe how you would determine the energy density, in kJ/g, for octane. Be sure to indicate what you would need to calculate or look up to complete this problem.