Chapter 13, Problem 87QAP

Consider the following reaction for the combustion of octane, ${\text{C}}_{\text{8}}{\text{H}}_{\text{18}}$:

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

at volume of oxygen gas at STP would be needed for the complete combustion of $\text{1}0.0\text{ g}$of octane?