4. 取1.0M的氫氧化鈉水溶液50mL,加水至250mL,則所得溶液的體積莫耳濃度為何?
(A)0.1M
(B)0.2M
(C)0.3M
(D)0.4M
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統計: A(10), B(319), C(12), D(9), E(0) #1771391
統計: A(10), B(319), C(12), D(9), E(0) #1771391