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To three significant figures,how many metric tons of iron ore are needed to produce 10,000 metric tons of iron per day in the blast furnace process? Assume that the iron ore is iron(III) oxide and that the ore is 70.0% pure.The reaction of interest is Fe2O3(s) + 3 CO(g) → 2 Fe(l) + 3 CO2(g) .
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