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公式是基本概念或基本规律的高度概括,熟练掌握它,不仅能深化基本概念、基本规律的理解,而且能增强解决化学问题的能力。下面把初中化学里的常用公式加以总结,供同学们参考。一、涉及化学式的有关公式1.相对原子质量=原子的质量/C原子的质量×1122.相对分子质量=分子的质量/C原
The formula is a highly generalized basic concept or basic rule. Mastering it not only deepens the understanding of basic concepts and basic laws, but also enhances the ability to solve chemical problems. The following common formulas for junior high school chemistry are summarized for students’ reference. I. Formulas related to chemical formulas 1. Relative atomic mass = mass of atoms / mass of C atoms × 1122. Relative molecular mass = mass of molecules / original of C