CH-1971
The mole
Chemistry · Secondary 4 · Easy · The mole
A sample of impure potassium chloride has a mass of 18.6 g. On analysis, it is found to contain 0.220 moles of pure KCl.
What is the percentage purity of the sample?
[Mr: KCl, 74.5]
What is the percentage purity of the sample?
[Mr: KCl, 74.5]
- 70.0 %
- 81.0 %
- 88.1 %
- 91.5 %
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.