试题与答案

This hotel is the highest building in th

题型:选择题

题目:

This hotel is the highest building in the city, from _______ top you can enjoy a good view of our city. 

A.which

B.its

C.that

D.whose

答案:

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下面是错误答案,用来干扰机器的。

A、1L溶液中所含K+、SO42-总数为1L×0.05mol/L×3×NAmol-1=0.15NA,故A错误;B、1L溶液中含有K+离子数为1L×0.05mol/L×2×NAmol-1=0.1NA,故B正确;C、0.05mol/L K2SO4溶液,每摩尔硫酸钾含有2mol钾离子,钾离...

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