Chemistry 0620 · IGCSE · Formulae

Formulae — practice question

What is the empirical formula of an iron oxide produced when 2.24 g of iron reacts with 0.96 g of oxygen?

  • A$\text{FeO}$
  • B$\text{Fe}_2\text{O}$
  • C$\text{Fe}_2\text{O}_3$
  • D$\text{Fe}_3\text{O}_4$

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