Chapter 9, Problem 9.108SP

Styrene ( ${\text{C}}_{\text{8}}{\text{H}}_{\text{8}}$ ), the precursor of polystyrene polymers, hasa standard heat of combustion of -4395 kJ/mol. Write a balanced equation for the combustion reaction, and calculate $\Delta H{°}_{\text{f}}$ for styrene in kJ/mol.
$\Delta H{°}_{\text{f}}[C{O}_2\left(g\right)]=-393.\text{5 kJ/mol;}$
$\Delta H{°}_{\text{f}}[H_{2}O\left(l\right)]=-285.\text{8 kJ/mol}$