How would you balance Fe304+CO====>CO2+Fe?

Answer 1

Easy:

Fe3O4 + x CO ===> y Fe + z CO2

Let's use the Iron oxide as the limiting factor, so if we have a single Fe3O4, we end up with 3 Fe, thus y = 3

Fe3O4 + x CO ===> 3 Fe + z CO2

If we have one Fe3O4, then we produce 4 oxygen atoms in the reduction, so we must have 4 CO to make the CO2, thus:

Fe3O4 + 4 CO ====> 3 Fe + 4 CO2

Now, count the number of atoms of each type on each side of the equation to donfirm the validity:

On the left: 3 iron, 8 oxygen, four carbon
on the right: 3 iron, 4 carbon, 8 oxygen

BALANCED!!

Answer 2

1 Fe3O4 + 4 CO ==> 4 CO2 + 3 Fe

Iron: 3, 3
Oxygen: 8, 8
Carbon: 4, 4

Answer 3

Fe3O4 + 4CO -> 4CO2 + 3Fe