Balance the following equations
`(b ) Cr_(2) O^(2-) + Sn^(2+) + H^(+) to`

Explanation

To balance the equation \( \text{Cr}_2\text{O}_7^{2-} + \text{Sn}^{2+} + \text{H}^+ \rightarrow \) (products), we will follow these steps:

### Step 1: Identify the Oxidation States
First, we need to determine the oxidation states of the elements involved in the reaction.

- In \( \text{Cr}_2\text{O}_7^{2-} \), chromium (Cr) has an oxidation state of +6.
- In \( \text{Sn}^{2+} \), tin (Sn) has an oxidation state of +2.

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