?+?=NaNO3+H2O

To balance the chemical equation involving sodium nitrate (NaNO3) and water (H2O), we need to determine the reactants that can produce these products. A common reaction that produces sodium nitrate and water is the reaction of sodium hydroxide (NaOH) with nitric acid (HNO3).

The balanced equation for this reaction is:

\[ \text{NaOH} + \text{HNO}_3 \rightarrow \text{NaNO}_3 + \text{H}_2\text{O} \]

So, in this case, the two reactants are sodium hydroxide (NaOH) and nitric acid (HNO3).