1. What mass of carbon monoxide must react with oxygen to produce 7.9 g of carbon dioxide?
2. Find the mass of benzene (C6H6) required to produce 2.66 L of carbon dioxide gas at STP from the reaction 2 C6H6 + 15 O2 à 6 H2O + 12 CO2.
3. What volumes of sulfur dioxide and dihydrogen sulfide gases are necessary to produce 11.4 L of water vapor? The balanced equation is SO2 + 2 H2S à 3 S + 2 H2O.