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Chemistry · Some Basic Concepts of Chemistry
हिन्दीA solution is prepared by adding \( 2\text{ g} \) of substance A to \( 18\text{ g} \) of water. What is the mass per cent of solute A in the solution?
Correct answer · Option 3
10%
Explanation
Mass per cent = \( \frac{\text{Mass of solute}}{\text{Total mass of solution}} \times 100 = \frac{2}{2 + 18} \times 100 = 10\% \).
