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How many moles of O2 react with 5.75 moles of Fe?

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Answer:

4.3125 moles

Step-by-step explanation:

The equation for the reaction between Fe and O₂ is given by;

4Fe + 3O₂ → 2Fe₂O₃

Therefore, 4 moles of Fe reacts with three moles of oxygen gas to form 2 moles of Fe₂O₃.

Therefore;

  • Mole ratio of Fe to O₂ is 4 ; 3
  • Moles of O₂ = Moles of Fe × 3/4
  • Thus, given the number of moles of iron, Fe as 5.75 moles;
  • Moles of Oxygen gas = 5.75 moles × 3/4

= 4.3125 moles

Therefore, moles of oxygen gas that will react will 5.75 moles of Fe will be 4.3125 moles

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