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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Viral on October 11, 2009, 06:37:09 PM

Title: Complicated Mass Question
Post by: Viral on October 11, 2009, 06:37:09 PM

If the mineral Pyrite, FeS2 is heated strongly in air, iron(III) oxide and sulphur dioxide are produced. What mass of

(a). Iron (III) oxide, and
(b). Sulphur dioxide could be made by heating 1 tonne of an ore which contained 50% by mass of pyrite?

4FeS2 + 11O2 --->  2Fe2O3 + 8SO2

(O = 16, S = 32, Fe = 56)

Please help.

Title: Re: Complicated Mass Question
Post by: sjb on October 12, 2009, 02:01:08 AM

50% of 1 tonne is what mass? Which is how many moles of pyrite?