A solution contains 0.001 g solute per cubic centimetre. What is the mass by volume percent?
Answer and explanation
Correct answer: 0.10 percent
Mass by volume percentage is the mass of solute, in grams, present in 100 mL of solution. Since 1 cm³ equals 1 mL, the concentration is 0.001 g per mL. Therefore, in 100 mL the solute mass is 0.001 × 100 = 0.100 g. Hence, mass by volume percentage is 0.10%, so option B is correct; the other values result from decimal or unit-conversion errors.
Frequently asked questions
What is the correct answer to this question?
0.10 percent
Why is this the correct answer?
Mass by volume percentage is the mass of solute, in grams, present in 100 mL of solution. Since 1 cm³ equals 1 mL, the concentration is 0.001 g per mL. Therefore, in 100 mL the solute mass is 0.001 × 100 = 0.100 g. Hence, mass by volume percentage is 0.10%, so option B is correct; the other values result from decimal or unit-conversion errors.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Some Basic Concepts of Chemistry. Topic: Mole concept and molar mass.
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