When the gases dihydrogen sulfide and oxygen react , they form the gase sulfur dioxide and water vapor. a) write the balanced equation for the reaction. b) How many grams of oxygen are required to react with 2.50 g of dihydrogen sulfide? c) How many grams of sulfur dioxide can be produced when 38.5 g of oxygen reacts? d) How many grams of oxygen are required to produce 55.8 g of water vapor?