1.8克水中含有O的质量分数为16/18
所以1.8克水中含有O质量为1.8×16/18=1.6克
那么3克-1.6克=1.4克,氢气
所以氧气不能超过1.6克
氢气和氧气共3克,混合点燃使之充分反应生成1.8克水.则混合中的氧气不可能超过多少?
氢气和氧气共3克,混合点燃使之充分反应生成1.8克水.则混合中的氧气不可能超过多少?
化学人气:634 ℃时间:2020-02-06 11:01:52
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