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化学计量数为什么加起来是零

更新时间: 2020-08-16 00:00:00     

化学的计量数,实际上就是方程式的配平。如果把方程式用待定系数法配平以后,得到的数字就是它的系数,也就是计量数。化学计量数的概念应包括其内涵与外延,即化学计量数之比与粒子数之比、物质的量之比、气体体积比、反应速率之比等的关系。但它本身缺不具备联系微观与宏观、统一初中与高中的功能。

关键词: 化学 计量 为什么 起来

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