2mg+o2=2mgo
化学式要配平的
为什么镁的化学表达式是mg .但是与氧气反映的表达式是2mg
为什么镁的化学表达式是mg .但是与氧气反映的表达式是2mg
如题
如题
化学人气:542 ℃时间:2019-10-24 00:49:28
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