Final answer:
In the chemical reaction N2O3 → N2 + O2, the reactant is dinitrogen trioxide and the products are molecular nitrogen and oxygen. This shows an example of a balanced chemical equation.
Step-by-step explanation:
The reactants in the reaction "N2O3 → N2 + O2" are dinitrogen trioxide (N2O3). The products of this reaction are molecular nitrogen (N2) and molecular oxygen (O2). In the context of balancing chemical equations, it's important to ensure that the number of each type of atom on the reactants side is equal to the number of each type on the products side. The given reaction is already balanced. To provide an additional example, the balanced equation for the reaction of molecular nitrogen and oxygen to form dinitrogen pentoxide is N2 + 5 O2 → 2 N2O5.