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国际计量大会通过的摩尔的定义是:摩尔是一系统的物质的量,该系统中所包含的基本单元数与0.012千克碳-12的原子数目相等。在使用摩尔时,基本单元应予指明,可以是分子、原子、离子、电子及其它粒子,或者是这些粒子的特定组合。根据摩尔定义,可人为引入一种规则——等物质的量规律。此规律可描述为:“任何化学反应,若把化学方程式中每种物质的化学式连同系数在内作为每种物质的基本单元,则消耗反应物的物质的量相等,生成
The definition of Moore adopted by the International Metrological Conference is: Moore is the quantity of a system of substances. The number of basic units contained in this system is equal to the number of atoms of 0.012 kg carbon-12. When using moles, the basic units should be specified and can be molecules, atoms, ions, electrons and other particles, or a specific combination of these particles. According to the definition of Moore, one can artificially introduce a rule—the law of the amount of such substances. This rule can be described as: "Any chemical reaction, if the chemical formula of each substance in the chemical equation is included as a basic unit of each substance together with the coefficient, the amount of substances that consume the reactants is equal.