设NA表示阿伏加德罗常数,下列说法正确的是        (   )A.标准状况下,22.4LCH4和CH2C...

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设NA表示阿伏加德罗常数,下列说法正确的是        (   )A.标准状况下,22.4LCH4和CH2C...

NA表示阿伏加德罗常数,下列说法正确的是          (    )

A.标准状况下,22.4LCH4和CH2Cl2的混合物所含有的分子数目为NA

  B.3g的*基中含有的电子数为1.6NA                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              

C.0.5mol的有机物C15H32中含有的共键数为24NA

D.现有乙烯、*烯、丁烯的混合气体共14g,其原子数为3NA

【回答】

D

知识点:物质的量单元测试

题型:选择题

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