Final answer:
The valid mole ratio from the balanced equation 2Fe(s) + 3CO2(g) → 4Fe(s) + 3CO(g) is Fe:CO2 = 2:3. The compound in the ratio is iron(II) oxide (FeO).
Step-by-step explanation:
The valid mole ratio from the balanced equation 2Fe(s) + 3CO2(g) → 4Fe(s) + 3CO(g) is:
Fe:CO2 = 2:3
The subscripts in the ratio represent the mole ratio of the elements in the compound. In this case, the compound is iron(II) oxide (FeO).