Solve the following limiting reactant problems

Ethane (C₂H6) is used to make plastics, anti-freeze, and detergents. The combustion for ethane follows the equation: 2 C₂H6+70₂-4CO₂ + 6H₂O.
Calculate the amount, in grams, of water (H₂O) produced by the combustion of 120 grams of ethane (C₂H6) with 672 grams of oxygen gas (O₂).
36
72
144
216

Octane (C8H18) is used in gasoline. The combustion for octane follows the equation: 2 C8H18 + 25 O₂ → 16 CO₂ + 18 H₂O. Calculate the amount, in grams, c
water (H₂O) produced by the combustion of 912 grams of octane (C8H18) with 2400 grams of oxygen gas (O₂).
756
828
900
972