How many grams of CO are needed to react wit an excess of #Fe_2O_3# to produce 209.7 g Fe?
#Fe_2O_3(s) + 3CO(g) -> 3CO_2(g) + 2Fe(s)#
You already have the stoichiometric equation, so you really have already answered this question........
This equation UNEQUIVOCALLY tells you that
So to your problem:
Given the stoichiometry of the equation, we require AT LEAST
I have taken classes to iron foundries where ore is still smelted, and iron metal is produced. It is getting hard to find a iron foundry these days, especially one that is willing to show a bunch of students around a (dangerous!) operation. If you ever see a working foundry you feel very small when you hear the roar of the blast furnace, and feel its incredible heat. These days most of the iron and steel produced is in China, and India.