CH-1965
The mole
Chemistry · Secondary 4 · Medium · The mole
A piece of impure magnesium oxide has a mass of 15.0 g. On analysis, it is found to contain 0.200 mol of pure MgO.
What is the percentage purity of the sample?
[Mr: MgO, 40.0]
What is the percentage purity of the sample?
[Mr: MgO, 40.0]
- 35.0 %
- 46.7 %
- 53.3 %
- 88.0 %
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