17.5 mL potassium permanganate stock solution 可稀釋成 1 L 1:5,000 solution。欲製備 400 mL stock solution,應秤取 potassium permanganate 多少公克?
(A)4
(B)8
(C)16
(D)32
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統計: A(3), B(4), C(14), D(1), E(0) #3972526
統計: A(3), B(4), C(14), D(1), E(0) #3972526