Given, Mass of Fe3O4=4.640kg=4640gm Molar mass of Fe3O4=56×3+16×4=232g ∴ Moles of F3O4=
4640
232
=20 Also, given Mass of CO=2.520kg=2520gm Molar mass of CO=12+16=28gm ∴ Molar of CO=
2520
28
=90
Here Fe3O4 is limiting reagent as to find limiting reagent, divide the given moles of reactants with their respective stoichiometric coefficient and reactant for which this ratio is minimum will be limiting reagent For Fe3O4,
moles
stoichiometric coefficient
=
20
1
For CO,
moles
stoichiometric coefficient
=
90
4
=22.5 ∴Fe3O4 is limiting reagent. Now produced Fe=20×3=60mol ∴ Weight of Fe=60×56=3360g