A.28n | B.14n | C. n/28 | D.n/14 |
A.标准状况下,22.4L己烷中所含分子数为1NA |
B.标准状况下,0.3 mol 干冰中所含分子数为0.3N A |
C.常温常压下,11.2L甲烷中含有的氢原子数为2NA |
D.1molNH4+所含有的质子数目为10NA |
A.64g | B.32g | C.64g /mol | D.32g /mol |
A.16 | B.17 | C.44 | D.64 |
A.常温常压下,48gO3含有的氧原子数为3NA |
B.50mL0.2mol/L的CuCl2溶液中,Cl-的数目为 0.01NA |
C.11.2 LNH3中所含的质子数为5NA |
D.2.4g金属镁变为镁离子时失去的电子数为0.1NA |
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