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在指导学生去中学实习过程中发现,由于教科书及参考资料中的一些问题,给中学化学教学造成一些不良影响,特提出一些改进意见,供同志们参考。一、在高中化学(1980年1月第一版)第二册195页习题5为:某有机物的蒸气密度是同体积空气的3.04倍,该有机物2.2克燃烧后得到1.8克水及2.24升二氧化碳(标准状况下),求该有机物的分子式。如果
In the process of guiding students to go to secondary school internships, due to some problems in textbooks and reference materials, which have caused some adverse effects on chemistry teaching in middle schools, some suggestions for improvement are proposed for reference by comrades. First, in high school chemistry (first edition, January 1980), volume 2, page 195, exercise 5: the vapor density of an organic substance is 3.04 times that of air of the same volume, and 2.2 grams of this organic substance gives 1.8 grams of water and 2.24 liters of carbon dioxide after combustion. (under standard conditions), find the molecular formula of the organic substance. in case