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Iron metal reacts with oxygen gas to produce iron(III) oxide. If you have 12.0 moles of iron, for complete reaction you need:

(HINT you need the balanced chemical reaction!)
A) 9.0 moles of O2 and produce 3.0 moles of Fe2O3
B) 9.0 moles of O2 and produce 6.0 moles of Fe2O3

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1 answer
  1. 4Fe + 3O2>> 2Fe2O3

    Looks like a 3:2 ratio to me.

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    bobpursley

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