1. The problem is to determine the product of the reaction between calcium and nitric acid. 2. Calcium is a metal and nitric acid is an acid. When a metal reacts with an acid, it typically forms a salt and hydrogen gas. 3. The general reaction formula is: $$\text{Metal} + \text{Acid} \rightarrow \text{Salt} + \text{Hydrogen gas}$$ 4. From the table, nitric acid forms nitrates as salts. 5. Calcium has a charge of +2 (Ca$^{2+}$) and nitrate is NO$_3^-$. 6. To balance the charges, two nitrate ions are needed for one calcium ion, so the salt formed is calcium nitrate, Ca(NO$_3$)$_2$. 7. The balanced chemical equation is: $$\text{Ca} + 2\text{HNO}_3 \rightarrow \text{Ca(NO}_3)_2 + \text{H}_2$$ 8. This means calcium reacts with nitric acid to form calcium nitrate and hydrogen gas. Final answer: calcium nitrate and hydrogen gas are produced.