1. Balance the following equation
___Fe(s) + ___O₂(g) ⟶ ___Fe₂O₃(s)
The balanced equation for the reaction between iron (Fe) and oxygen (O₂) to form iron oxide (Fe₂O₃) is:
4Fe(s) + 3O₂(g) ⟶ 2Fe₂O₃(s)
In this balanced equation, the number of Fe atoms on both sides is 4 and the number of O atoms is 6. Therefore, the equation is balanced as per the Law of Conservation of Mass.