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在初中化学计算中,在客观事实和质量守恒定律两大原则的指导下,列出正确的化学方程式,掌握一定的规律和技巧进行物质的过量判断,才能得到正确的计算结果。
Under the guidance of the two principles of objective facts and the law of conservation of mass in the junior middle school chemistry calculation, we can get the correct calculation results by listing the correct chemical equations, mastering certain rules and techniques and making material over-judgment.