Under the same conditions of temperature and pressure,`2 L CO_(2) 3 I CI_(2) 5 L H_(2) 4 L N_(2) and 1 L SO_(2)` are collected in different containers. In which gas sample will there be
the least number of molecules? Justify your answer.

Explanation

To determine which gas sample has the least number of molecules, we can use Avogadro's law, which states that equal volumes of gases, at the same temperature and pressure, contain an equal number of molecules. We will calculate the number of molecules in each gas sample based on their volumes.

### Step-by-Step Solution:

1. **Identify the volumes of each gas:**
- CO₂: 2 L
- Cl₂: 3 L
- H₂: 5 L
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