Metals below carbon in the reactivity series
2 marks · EasyCalculate the total number of moles of oxygen atoms removed when 1.0 mole of Fe2O3 is reduced using carbon monoxide.
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3 mol (±0)
Common mistakes: 2 mol (counting O2 instead of atoms)
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Marking points
M1 · 1 mark · Correctly relates moles of Fe2O3 to moles of O atoms (1 Fe2O3 contains 3 O atoms).
A1 · 1 mark · Final answer = 3 mol.
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