To 50 mL of 0.5 M `H_(2)SO_4` 75 mL of 0.25 M `H_2SO_4` is added. What is the concentration of the final solution if its volume is 125 mL?

Explanation

To find the concentration of the final solution after mixing two solutions of sulfuric acid (H₂SO₄), we can follow these steps:

### Step 1: Calculate the number of moles of H₂SO₄ in each solution.

1. **For the first solution (50 mL of 0.5 M H₂SO₄):**
- Volume (V₁) = 50 mL = 0.050 L
- Molarity (M₁) = 0.5 M
- Moles of H₂SO₄ (n₁) = M₁ × V₁ = 0.5 mol/L × 0.050 L = 0.025 moles
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