Final answer:
The chemical equation Fe₂O₃ + 3H₂SO₄ → 2Fe₂(SO₄)₃ + 3H₂O indicates that 3 water molecules are produced when ferric oxide reacts with sulfuric acid, so the answer is B. 3.
Step-by-step explanation:
In the given chemical equation:
Fe₂O₃ + 3H₂SO₄ → 2Fe₂(SO₄)₃ + 3H₂O,
we need to identify the number of water molecules produced. According to the balanced chemical equation, the coefficient in front of H2O (water) is 3. Therefore, for every 1 mole (or equivalent ratio unit) of Fe2O3 reacted with 3 moles of H2SO4, 3 moles of water molecules are produced. This indicates that there are 3 water molecules in this chemical reaction.
The correct answer to the question of how many water molecules are in this equation is: B. 3.