Final answer:
Balance the unbalanced reaction between iron(II) oxide and oxygen gas to produce iron(III) oxide by changing the coefficients to 4 for FeO and 2 for Fe2O3, maintaining the same number of atoms on both sides.
Step-by-step explanation:
The student is asking how to balance the chemical equation where solid iron(II) oxide reacts with oxygen gas to produce solid iron(III) oxide.
The unbalanced chemical equation for this reaction is:
FeO(s) + O2(g) → Fe2O3(s)
To balance the equation, we need to ensure that there is the same number of each type of atom on both sides of the equation. After balancing, the correct equation (in lowest multiple integers) is:
4 FeO(s) + O2(g) → 2 Fe2O3(s)