试题与答案

下列叙述正确的是 A.1 mol H2O的质量为18g/mol B.CH4的摩尔

题型:选择题

题目:

下列叙述正确的是

A.1 mol H2O的质量为18g/mol

B.CH4的摩尔质量为16g

C.3.01×1023个CO2分子的质量为22g

D.标准状况下,1 mol任何物质体积均为22.4L

答案:

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B. felt sorry for her mistake

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D. disliked the author's dad

3. Why does the author say that Brownie was more than just a family pet?

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C. She was loved by everybody she met.

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