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质量守恒定律是初中化学中的重要内容之一,它从量的方面研究化学反应的客观规律,是书写化学方程式的理论依据,怎样理解质量守恒定律呢?
The law of conservation of mass is one of the important contents of chemistry in junior middle school. It studies the objective law of chemical reaction from the aspect of quantity, and is the theoretical basis of writing chemical equation. How to understand the law of conservation of mass?