A power plant is driven by the combustion of a complex fossil fuel having the formula C₁₁H₇S. Assume the air supply has a N₂/O₂ molecular ratio of 3.76:1.00 and the N₂ remains unreacted. In addition to the water produced, assume the fuel’s C is completely converted to CO₂ and its sulfur content is converted to SO₂.

a. Including N₂ supplied in the air, write a balanced combustion equation for the complex fuel, assuming 100% stoichiometric combustion (i.e., when there is no excess oxygen in the products). Except in the case of N₂, use only integer coefficients.

b. Including N₂ supplied in the air, write a balanced combustion equation for the complex fuel, assuming 133% stoichiometric combustion (i.e., when there is excess oxygen present in the products). Except in the case of N₂, use only integer coefficients.