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本届化学素质和实验能力竞赛(第十一届天原杯)复赛试题中,计算题共有10小题,包括5道选择题、3道填空题和2道压轴计算题。题目内容新颖、灵活多样、特点突出、难度适宜,占卷面总分1/3强,对参赛者的总成绩有举足轻重的影响。笔者拟对这些题目的解法和特点进行粗浅的分析和探讨。为节省文字将以元素符号代表相对原子质量,用化学式代表相对分子质量列
In this year's chemistry quiz and experimental ability contest (the 11th Tianyuan Cup) semi-finals, there are a total of 10 questions in the calculation, including 5 multiple-choice questions, 3 blank-fill questions and 2 final-axis calculation questions. The content of the topic is novel, flexible, distinctive, and suitable for difficulty. It accounts for 1/3 of the total score of the reel, and has a decisive influence on the total score of the contestants. The author intends to analyze and discuss the solutions and characteristics of these topics. In order to save text, the relative atomic mass is represented by the element symbol, and the relative molecular mass column is represented by the chemical formula.