Name and state the law which is kept in mind when we balance a chemical reaction.

Explanation

**Step-by-Step Text Solution:**

1. **Identify the Law**: The law that is kept in mind when balancing a chemical reaction is the **Law of Conservation of Mass**.

2. **State the Law**: The Law of Conservation of Mass states that **mass can neither be created nor destroyed in a chemical reaction**. This means that the total mass of the reactants must equal the total mass of the products.

3. **Application of the Law**: When balancing a chemical equation, we ensure that the number of atoms of each element is the same on both the reactant and product sides. This is done by adjusting the coefficients in front of the chemical formulas.

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