下列说法正确的是(设阿伏加德罗常数的数值为NA)        A.在常

下列说法正确的是(设阿伏加德罗常数的数值为NA)

       A.在常温常压下,16gO2O3的混合气体所含原子数目为NA

       B1mol/LK2SO4溶液所含K+数目为2NA

       C.在标准状况下,22.4L水所含分子数目为NA

       D7.8gNa2O2CO2完全反应时,转移电子数目为0.2NA

答案

A

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