分析:H2A是二元弱酸,KHA溶液呈酸性,说明HA-的电离程度大于水解程度,溶液呈电中性,则溶液中存在电荷守恒,溶液中还存在物料守恒,据此分析解答. 解答:解:A.溶液中存在电荷混合,根据电荷守恒得c(K+)+c(H+)═c(HA-)+c(OH-)+2c(A2-),故A错误;
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微波辐射是指()。A.频率为 300MHz～300GHz 的电磁辐射B.频率为 30MHz～300WHz 的电磁辐射C.频率为 30kHz～100kHa 的电磁辐射D.频
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The Hathor Temple at Serabit el-Khadim has yielded valuable information about different phases of Hatshepsut's career. Alongside the references to Hatshepsut already published in The Inscriptions of Sinai, new references can be found in unpublished finds from this site, documented by the Tel Aviv ...
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