A. | B. | C. | D. |
A.78 | B.78g | C.78g/mol | D.78mol |
A.28.4g | B.28.4g/mol | C.71g | D.71g/mol |
下列叙述正确的是( )
A.H2O的摩尔质量为18g
B.H+的摩尔质量是1g/mol
C.1mol 氢气的质量为2g/mol
D.水的相对分子质量是18g/mol
下列说法正确的是( )
A.1molH+的质量是1g
B.H2的摩尔质量是2g
C.1molO2的质量是32g/mol
D.1molNa+的质量是11g
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