A.CH4 | B.H2O | C.NH3 | D.HCl |
m |
M |
N |
NA |
A.2.3克金属钠变为钠离子时,钠离子所含的电子数目为0.1NA |
B.18克水所含的电子数目为NA |
C.在常温常压下11.2升氯气所含的原子数目为NA |
D.16克氧气所含的原子数目为NA |
A.①④③② | B.④③②① | C.②③④① | D.④③①② |
A.3.01×1023 | B.6.02×1023 | C.1.202×1024 | D.2mol |
A.2g氢气所含质子数是2NA |
B.5.4g水所含的分子数为0.3NA |
C.标准状况下,11.2LH2O含有的分子数为0.5NA |
D.1molNa与足量水反应失去的电子数为NA |
A.14m | B.28m | C.
| D.7m |
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