What happens when human RBCs are placed in 0.2% NaCl solution?

Explanation

### Step-by-Step Solution:

1. **Understanding the Concentration of RBCs**:
- Human red blood cells (RBCs) have a typical solute concentration of approximately 0.9% NaCl. This means that in a solution where the concentration of solute is equal to 0.9%, there will be no net movement of water into or out of the cells.

2. **Analyzing the 0.2% NaCl Solution**:
- When RBCs are placed in a 0.2% NaCl solution, we need to compare this concentration with that of the RBCs. The 0.2% solution has a lower concentration of solute compared to the RBCs' 0.9% concentration.

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