How many grams of sulfuric acid, H2SO4, can be obtained from 578 grams of iron ore if the ore is 76.0% FeS? The reactions involved are given below. Each reaction is 92.0% efficient.
4FeS + 7O2 ---> 2Fe2O3 + 4SO2;
2SO2 + O2 ---> 2SO3;
SO3 + H2O ---> H2SO4