Answer:
4.23 mol
Step-by-step explanation:
Step 1. <em>Balanced equation
</em>
Fe₂O₃ + 3SO₃ ⟶ Fe₂(SO₄)₃
Step 2. <em>Calculation:
</em>
You want to convert moles of SO₃ to moles of Fe₂(SO₄)₃.
The molar ratio is 1 mol Fe₂(SO₄)₃:3 mol SO₃
Moles of Fe₂(SO₄)₃ = 12.7 mol SO₃ × (1 mol Fe₂(SO₄)₃/3 mol SO₃)
Moles of Fe₂(SO₄)₃ = 4.23 mol Fe₂(SO₄)₃
The reaction will form 4.23 mol of Fe₂(SO₄)₃.