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阿佛加德罗常数在高考中多次考查,因涉及到的 知识点多,具有较强的综合性和良好的区分度。因 此,备受高考命题青睐。下面,对其根据题目设置的 几个方面进行总结。 一、状况条件:考查气体在非标准状况下,如常温 常压下,1.01×10~5Pa、25℃。如错误的描述为:在常温 常压下,44.8LO_2的物质的量为2mol。另外,也有一 些反常规的描述为:在常温常压下,48g O_2含有的氧 原子数为3N_A,这种说法也是正确的,不要被此条件 所迷惑。
Avocadero’s constants were examined several times in the college entrance examination. Because of the many knowledge points involved, it has a strong comprehensiveness and good differentiation. Therefore, it is favored by the college entrance examination proposition. Below, we summarize several aspects of the topic setting. I. Condition conditions: Examine gas under non-standard conditions, such as 1.01×10~5Pa, 25°C under normal temperature and pressure. As incorrectly described, the amount of 44.8LO_2 is 2 mol at normal temperature and pressure. In addition, there are some unconventional descriptions: Under normal temperature and pressure, 48g O 2 contains 3N_A oxygen atoms, which is also correct. Do not be confused by this condition.