How many grams of pure H2SO4 can be obtained from 250 grams of iron ore if the ore is 82% FeS2? The reactions involved are given below:4FeS2 + 11 O2 --gt; 2 Fe2O3 + 8 SO2 (95% efficient)2SO2 + O2 --gt; 2SO3 (90% efficient)SO3 + H2O --gt; H2SO4 (90% efficient)
