化学计算作为初中化学毕业会考的五大模块之一,教师在平时的教学中总会将其放在重要位置,学生在学习中更视其为重点和难点,师生在化学计算上都要花费大量的时间,特别是都围绕着每年中考化学最后一道计算题要进行大量的讲解训练,但常常是讲 As one of the five modules of junior high school chemistry graduation exams, teachers in chemistry usually put it in an important position in their daily teaching. Students regard it as a key and difficult point in their studies. Students and students have to spend a lot of stoichiometry Of the time, in particular, are all around the annual calculation of the last calculation of chemistry to be a lot of training to explain, but often say