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Atoms and reactions

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Question 66

Iron(III) oxide, Fe2O3\text{Fe}_2\text{O}_3Fe2​O3​, is reduced to iron by heating with aluminium. What is the minimum mass of Al\text{Al}Al required to reduce 39.9 g39.9\text{ g}39.9 g of iron(III) oxide?

(Use the relative atomic masses: Fe=55.8\text{Fe} = 55.8Fe=55.8, Al=27.0\text{Al} = 27.0Al=27.0, O=16.0\text{O} = 16.0O=16.0)

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Markscheme

Atoms and reactions Questions

  1. A Level
  2. /Chemistry
  3. /Atoms and reactions

199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.

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