Write the balanced chemical reaction for the formation of fe2(so4)3 from fe2o3 and so3 and determine how many moles of fe2(so4)3 are formed when 12.7 mol of so3 are reacted.

4.23 mol

Step-by-step explanation:

Step 1. Balanced equation

Fe₂O₃ + 3SO₃ ⟶ Fe₂(SO₄)₃

Step 2. Calculation:

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.