用NA表示阿伏加德罗常数的值。下列叙述正确的是            

NA表示阿伏加德罗常数的值。下列叙述正确的是             

A.常温常压下的33.6 L氯气与27 g铝充分反应,转移电子数为3NA

B.标准状况下,22.4 L己烷中共价键数目为19NA

C.由CO2和O2组成的混合物中共有NA个分子,其中的氧原子数为2NA

D.1 L浓度为1 mol·L-1的Na2CO3溶液中含有NA个CO32-

 

答案

C

解析:略

 

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