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1 mol任何粒子的粒子数叫做阿伏加德罗常数.阿伏加德罗常数的符号是NA,单位是mol-1,其近似值为6.02×1023mol-1.物质的量、粒子数和阿伏加德罗常数三者的关系可表示为n=N/NA,由此式可求得一定数目粒子的物质的量,也可计算一定物质的量的物质所含的粒子数.近十几年来,高考化学试卷中经常出现考查阿伏加德罗常数的试题,题型是选择题,题干大致为“设NA表示阿伏加德罗常数,下列说法中正确(或不正确)的是……”选项的内容不仅包括物质的量、粒子数、阿伏加德罗常数、摩尔质量、气体摩尔体积的概念和换算,而且还
The number of particles of any particle of 1 mol is called Avogadro’s number.The symbol of Avogadro’s number is NA, the unit is mol-1, and its approximate value is 6.02 × 1023 mol-1. The amount of material, the number of particles and Av The relationship between the Gardner constant of the three can be expressed as n = N / NA, which can be obtained by a certain number of particles of the substance amount, can also calculate the amount of a certain substance of the substance contained in the number of particles. In recent years, the college entrance examination chemistry papers often appear to test Avogadro’s questions, the question is a multiple-choice questions, the title is roughly “set NA Avogadro constant, the following statement correct (or incorrect) The contents of the ”..." option include not only concepts and conversions of the amount of material, the number of particles, Avogadro’s number, molar mass, gas molar volume, but also