A.氧元素的质量比是1:1 | B.氧原子个数比是1:1 |
C.体积比是2:3 | D.分子个数之比是3:2 |
A.V/22400mol/L | B.1000V/22.4mol/L | C.V/22.4mol/L | D.V/11.2mol/L |
A.摩尔质量就等于物质的式量 | B.摩尔质量是物质式量的6.02×1023倍 |
C.HNO3的摩尔质量是63g | D.氧化铜和三氧化硫的摩尔质量相等 |
A.3 :4 :3 | B.1 :2 :3 | C.1 :1 :1 | D.6 :3 :2 |
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