calculation question regarding mass? | Yahoo Answers

 · If the mineral , , is heated strongly in air, ironIII oxide and sulfur dioxide are produced. What mass aironIII oxide, and b sulfur dioxide could be made by heating 1 tonne is an ore which contained 50% by mass of ? 4FeS2 + 11O2 ---> 2Fe2O3 +8S02 please help me in detail for question A i got 1 tonne and B, 1.6 tonnes im pretty sure that is wrong. the 50% part ...

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