If 10 g of solute is dissolved in 40 g of solvent, what is the mass percentage of the solute in the solution?
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Answer and explanation
Correct answer: 20%
Mass percentage is calculated as (mass of solute ÷ mass of solution) × 100. The total mass of the solution is 10 g + 40 g = 50 g. Therefore, mass percentage = (10/50) × 100 = 20%. The denominator is the total solution mass, not the mass of solvent alone, so option A is correct.
Frequently asked questions
What is the correct answer to this question?
20%
Why is this the correct answer?
Mass percentage is calculated as (mass of solute ÷ mass of solution) × 100. The total mass of the solution is 10 g + 40 g = 50 g. Therefore, mass percentage = (10/50) × 100 = 20%. The denominator is the total solution mass, not the mass of solvent alone, so option A is correct.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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