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化学式是一种重要的化学用语,在初中化学中占有非常重要的地位.确定物质化学式是中考的热点题目.解答这类题目可采用分析计算的方法.下面以近年中考试题为例分析如下.1.利用相对分子质量、相对原子质量确定物质的化学式
Chemical formula is an important chemical term, which occupies a very important position in chemistry of junior high school. Determining the chemical formula of a substance is a hot topic in the examination. The answer to this kind of problem can be analyzed and calculated. The following exams are taken as an example in recent years. Use the relative molecular mass, relative atomic mass to determine the chemical formula of a substance