Question 8
Biofuels usually consist of ethanol sourced from fermented biowaste materials. It is a renewable source of energy, as opposed to coal and oil. The demand for such fuels increases every year by at least 3 % as many industries veer away from non- renewable sources of energy. Ethanol ($\mathrm{C_2H_6O}$), like most hydrocarbons, burn in the presence of oxygen gas ($\mathrm{O_2}$) to produce water vapor ($\mathrm{H_2O}$) and gaseous carbon dioxide. It is known that burning 1.00 g of ethanol in a sufficient amount of $\mathrm{O_2}$ results in 1.17 g of water and 1.91 g of carbon dioxide. How much oxygen gas is required for this process?