How many moles of fe3o4 can be produced when 12.00 mol fe react with 6.00 mol o2?

In order to calculate the moles of product we need to write complete balanced chemical reaction. 3Fe(s) + 2O2   --->Fe3O4 Hence one mole of Fe3O4 will be produced from three moles of Fe and 2moles of oxygen molecule. For given 12 moles of Fe 8 moles of O2 will be required. Howwver only six moles of O2 are given so O2 is the limiting reagent. The six mes of O2 will react with 9 molws of Fe to produce three moles of Fe3O4.

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