Iron Is Produced from Its Ore by the Following Reactions

question 4

Multiple Choice

Iron is produced from its ore by the following reactions: 2C(s) + O₂(g)  2CO(g)
Fe₂O₃(s) + 3CO(g)  2Fe(s) + 3CO₂(g)
How many moles of O₂(g) are needed to produce 1.4 mol Fe(s) ?

• A) 1.1 mol O₂
• B) 0.7 mol O₂
• C) 4.0 mol O₂
• D) 2.1 mol O₂

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