16. Consider the combustion of octane (CgHis), a primary component of gasoline. 2C.Hss(I) 25 Olg) 18 H,o(g) 16CO2(g) + â + - Calculate the change in volume (in L) due to the total number of moles of gases produced when 1.000 gal ("3.784 L) of octane undergoes combustion at 1.00 atm and 25.00°C. The density of octane at 25.00 C is 0.703 g/mL. a.