与16克CH4分子中含H原子数相同的H2O分子是多少个?
最近刚学摩尔质量,有点饶不过来,请哥哥姐姐们多帮帮忙
人气：385 ℃ 时间：2019-09-25 21:53:57
解答
摩尔是一个计量单位,你可以理解为和各十百千万一样的就行
1mol就代表了有6.02*10的23次方个个体
16克CH4分子的物质的量为16/16=1mol
有4mol的H原子
H2O有两个H原子,所以要2molH2O为1.204*10的24次方个
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