What is the equation for the complete combustion of an alkane, which requires 14 moles of oxygen gas for each mole of alkane combusted? a. Alkane + 14O2 -> CO2 + H2O b. Alkane + 7O2 -> CO2 + H2O c. Alkane + 28O2 -> CO2 + H2O d. Alkane + 10O2 -> CO2 + H2O