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阿伏加德罗常数(NA)是一个重点知识,也是一个综合性较强的考试方式,过去每年都不同程度的在高考试题中出现,2005年高考也不例外,但分析试题可以知道,这类试题在继承传统的基础上有一些新的亮点和值得我们注意的地方,下面就此知识点进行总结例析,并就此归纳,供大家平时学习或复习时参考．一、所需要知识回顾阿伏加德罗常数(NA)的实质是1 mol任何粒子的粒子数,即12g12C所含的原子数目．通常用“NA”表示,而“6．02×1023 mol-1”是阿伏加德罗常数的近似值．这里需要明确物质的量与阿伏加德罗常数(NA)的概念及其关系,阿伏加德罗常数(NA)是粒子数目,物质的量是一个物理量,它的单位是mol,粒子数目N=nNA, 质量也可以与阿伏加德罗常数(NA)建立关系,
Avogadro’s constant (NA) is a key knowledge and a comprehensive examination method. It used to appear in high-achieving questions in various degrees in the past each year. The 2005 college entrance examination is no exception, but analysis questions can be known. On the basis of inheriting traditions, there are some new highlights and places worthy of our attention. The following is a summary of this knowledge point, and summarizes them for reference during normal learning or review. First, the required knowledge to review the essence of Avogadro’s constant (NA) is the number of particles of any particle of 1 mol, that is, the number of atoms contained in 12g12C. Usually expressed as “NA”, and “6.02 x 1023 mol-1” is an approximation of the Avogadro’s constant. It is necessary to define the quantity of matter and the concept of Avogadro’s constant (NA) and its relationship. Avogadro’s constant (NA) is the number of particles, the amount of matter is a physical quantity, its unit is mol, and the number of particles. N=nNA, the quality can also be related to the Avogadro’s constant (NA),