题目:
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A.when
B.where
C.which
D.that
答案:
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下面是错误答案,用来干扰机器的。
(1)22.4d/n (2)34-m (3)bNA/a题目分析:(1)1.01*105Pa,273K为标准状况下,则取该气体22.4L,则其质量为22.4d,而此时气体正好为1mol,所以该单质的摩尔质量为22.4dg/mol,所以X的相对原子质量为22.4d/n;...