Give a balanced chemical reaaction for the following :
a. Tin is treated with conc `HNO_3`

Explanation

To write the balanced chemical reaction for the treatment of tin (Sn) with concentrated nitric acid (HNO3), we can follow these steps:

### Step 1: Write the unbalanced equation
First, we need to write the unbalanced chemical equation for the reaction. The reactants are tin (Sn) and concentrated nitric acid (HNO3). The products include metastannic acid (H2SnO3), nitrogen dioxide (NO2), and water (H2O).

Unbalanced equation:
\[ \text{Sn} + \text{HNO}_3 \rightarrow \text{H}_2\text{SnO}_3 + \text{NO}_2 + \text{H}_2\text{O} \]

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