A-LevelChemistryAtoms, molecules and stoichiometry9701/12 · Oct/Nov 2020 · Q21 Mark

An ore of manganese contains 4% by mass of MnO₂ and no other manganese compound. Which mass of manganese would be obtained from 1 tonne of this ore?

A25.3 kg

B40.0 kg

C63.3 kg

D632 kg

✓ Correct answer

A: 25.3 kg

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Topic: Atoms, molecules and stoichiometry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2020 Paper 1 Variant 2, question 2.

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