Respuesta :

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Answer:

  • 0.80 mol Al

Explanation:

1) Word reaction:

  • Aluminum + ferrous oxide → aluminum oxide + iron

This is a single replacement reaction, in which aluminum, a more acitve metal than iron, replaces the iron in the ferrous oxide to form aluminum oxide and iron.

2) Skeleton chemical equation:

  • Al + FeO → Al₂O₃ + Fe

3) Balanced chemical equation:

Add the coeffcients to comply with the law of conservation of mass:

  • 2Al + 3FeO → Al₂O₃ + 3Fe

4) Mole ratio of Al and FeO:

  • 2 mol Al : 3 mol FeO

5) Set a proportion with the unkown and solve:

  • x / 1.2 mol FeO = 2 mol Al / 3 mol FeO

  • x = 1.2 mol FeO × 2 mol Al / 3 mol FeO = 0.80 mol Al ← answer