Lesson: Chapter 3 — Mixtures

3.2. The composition of a mixture 1 of 6 Reset answers

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Question 1

A solution of 100 g contains 5 g of solute. What is the mass fraction of the solute?

A 0.5 B 0.05 C 5 g D 0.5 g

The right answer is the one marked above.

0.05. 5 g ÷ 100 g = 1 ÷ 20 = 0.05.

A mass fraction is a ratio of two masses, so it carries no units at all. Any answer written with g after it has misunderstood what a fraction is.

Answer the question to continue.