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应用反应前后质量守恒和电荷守恒的规律,常能使一些化学计算题迅速求解,达到事半功倍的效果。现举数例,加以说明。例1(2000年春季高考招生试题25)
The law of conservation of the mass and conservation of charge before and after the application of the reaction can often solve some chemical calculation problems quickly and achieve a multiplier effect. Here are a few examples to illustrate. Example 1 (2000 spring college entrance exam questions 25)