What freezes out first when a solution of common salt is cooled?

Explanation

To determine what freezes out first when a solution of common salt (NaCl) is cooled, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Components of the Solution**:
- A solution of common salt consists of sodium chloride (NaCl) dissolved in water (H₂O).

2. **Concept of Freezing Point Depression**:
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