巧用质量守恒定律解化学计算题马明奎计算题中巧用质量守恒定律就是充分应用分析、比较、联想等思维方法，把题目中给出的条件或隐含的条件里相等的量找出来列数学方程式进行求解，尽量避免书写化学方程式和列比例式步骤，达到化繁为简、化难为易、快速准确的目的。一、化... Using the Law of Conservation of Masses to Solve Mathematical Calculation Problems Ma Mingkui uses the law of conservation of masses in his computational problems to fully apply analytical methods such as analysis, comparison, and association, and to find out the equivalent quantities in the given conditions or implicit conditions. The equations are solved to avoid the writing of chemical equations and column proportional steps to achieve the goal of simplifying the complexity, making it difficult to change, and quickly and accurately. First, the...