問題詳情
13．等质量的CuO和MgO粉末分别溶于相同体积的硝酸中，得到的Cu（NO3）2和Mg（NO3）2溶液的浓度分别为a mol•L-1和b mol•L-1。则a与b的关系为
(A)a=b
(B)a=2b
(C)2a=b
(D)a=5b
(A)a=b
(B)a=2b
(C)2a=b
(D)a=5b
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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