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Atoms and reactions

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Question 128

1.158 g of an oxide of iron is reduced by hydrogen gas to form iron metal and 0.360 g of water.

What is the formula of the oxide of iron?

A

FeO\text{FeO}FeO

B

Fe2O3\text{Fe}_2\text{O}_3Fe2​O3​

C

Fe3O4\text{Fe}_3\text{O}_4Fe3​O4​

D

FeO2\text{FeO}_2FeO2​

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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