The complete combustion of octane, C8H18, the main component of gasoline, proceeds as follows:
2 C8H18(l) + 25 O2(g)----->16 CO2(g) + 18 H2O(g)
(a) How many moles of O2 are needed to burn 1.50 mol of C8H18?
(b) How many grams of O2 are needed to burn 10.0 g of C8H18?