If the amount of solute is 0.1 mol and its mass is 18 g, what is its molar mass?
Answer and explanation
Correct answer: 180 g mol⁻¹
Molar mass is obtained from M = m/n. Substituting the given values, M = 18 g / 0.1 mol = 180 g mol⁻¹. Thus, option C is correct. This result means that one mole of the substance would have a mass of 180 g, assuming the sample represents the same pure substance. Option A incorrectly uses the sample mass without accounting for the fact that the sample contains only 0.1 mol.
Frequently asked questions
What is the correct answer to this question?
180 g mol⁻¹
Why is this the correct answer?
Molar mass is obtained from M = m/n. Substituting the given values, M = 18 g / 0.1 mol = 180 g mol⁻¹. Thus, option C is correct. This result means that one mole of the substance would have a mass of 180 g, assuming the sample represents the same pure substance. Option A incorrectly uses the sample mass without accounting for the fact that the sample contains only 0.1 mol.
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.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
