2Fe2O3 + 3 C -----. 4Fe + 3CO2 a.How many grams of CO2 can be produced from 125 grams of Fe2O3?b.How many grams of carbon are needed to react with 125 grams of Fe2O3 ?c.How many grams of carbon are needed to produce 424 grams of Fe? d.How many grams of Fe2O3 are needed to produce 424 grams of Fe?
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Answer 2Fe2O3 + 3 C -----. 4Fe + 3CO2? Molar mass of Fe2O3 159.7 g / mol Molar mass of CO2 is 44 g / mol , molar mass of Fe is 55.8 g / mol 2 moles Fe2O3 needs 3 mole carbon to produce 4 moles Fe and 3 moles CO2 Part 1 125 g Fe2O3 125 / 159.7 0.7827 moles , this will form 3/2*0.7827*44 51.66 g CO2 125 g Fe2O3 needs 3/2*0.7827*12 14.1 g carbon Part 2 424 g Fe is 424 / 55.8 7.6 moles Fe, this needs 7.6/2*159.7 606.9 g Fe2O3 and 3/4*7.6*12 68.4 g carbon
