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根据化学式的计算是初中化学的一类最基本计算技能，学得好坏直接影响今后学习根据化学方程式的计算。本文就此类计算的常见题型与解法作一小结。一、计算物质的式量例1计算的式量。解题思路根据化学式求物质的式量，必须掌握下列知识与技能：①式量等于化学式中各原子的原子量
The calculation of chemical formulas is a basic calculation skill for junior high school chemistry. Learning well will directly influence the calculation of chemical equations in the future. This article gives a summary of the common questions and solutions to this type of calculation. First, calculate the formula of the amount of material Example 1 Calculated formula. Problem-solving ideas According to the chemical formula, the following knowledge and skills must be mastered: 1. The quantity is equal to the atomic quantity of each atom in the chemical formula.