In the natural gas the Hydrogen sulfide is an impurity that must be removed. One common removal method is called the Claus process, by which relies on this reaction:
8 H2S + 4 O2 -----> S8 + 8 H20
Under optimal conditions the Claus process provides 98% yield of S8from H2S. Determine the number of grams of S8 would be formed assuming 98% yield if you started with 30.0 g of H2S and 50.0 g of O2.