balance

FeS2 + O2 < Fe2O3 + So2

1 answer

I assume the arrow is pointing the wrong way.
FeS2 + O2 ==> Fe2O3 + SO2

balanced is
4FeS2 + 11O2 ==> 2Fe2O3 + 8SO2
check it.
4Fe on left and 4 on right
8S on left and 8 on right.
22 O on left and (2*3=6 + 8*2=16 and 16 + 6 = 22) O on the right.

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