A.64g | B.64 | C.64g/mol | D.32g/mol |
A.16g | B.32g | C.64g/mol | D.32g/mol |
A.摩尔是物质的质量单位 |
B.氢气的摩尔质量是2g |
C.1molH3O+的质量是19g |
D.摩尔质量与1mol该物质的质量相等 |
A.NaOH的摩尔质量是0.040kg/mol |
B.1molH2的质量与它的相对分子质量相等 |
C.1molH2O的质量为18g/mol |
D.氧气的摩尔质量在数值上等于它的相对分子质量 |
A.1molH2SO4的物质的量是98g/mol |
B.H2SO4的摩尔质量为98 |
C.0.5mol的氧 |
D.6.02×1022个H2SO4分子的质量为9.8g |
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