在我们学习有机化学的过程中,经常会遇到一些有关有机混合物中元素质量分数的问题,有些同学会认为,这种题是需要硬算才行的。其实不然,只要你掌握了一些基本的规律,根本不必花很多时间来计算。现对此作一次归纳,使大家在以后遇到类似的题时能够灵活应对。例1 ag甲苯和bg甘油组成的混合物中,若 In our study of organic chemistry, we often encounter some problems about the mass fraction of elements in organic mixtures. Some students may think that this kind of problem requires hard work. In actual fact, as long as you master some basic laws, do not have to spend a lot of time to calculate. Now it is time to make a summary so that everyone can react flexibly when they encounter similar problems in the future. Example 1 A mixture of toluene and bg glycerol, if