2. What mass of calcium chloride, CaCl₂, is needed to prepare 500 mL of a 1.56 M solution? (Ca: 40.08, Cl: 35.45)
(A) 86.6 g
(B) 60.8 g
(C) 111 g
(D) 25.6 g
(E) 70.6 g

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