Calculate the amount of solute (in moles) needed to prepare a 500.0 mL solution of 2.6% (m/v) CuSO₄ (MW = 159.60 g/mol).

• A. 8.1 × 10^–2 mol
• B. 7.2 × 10^–3 mol
• C. 1.4 × 10^–1 mol
• D. 6.6 × 10^–2 mol

Answer: (A)