化学计量在实验中的应用复习要点(国外英文资料).docVIP

化学计量在实验中的应用复习要点(国外英文资料) Review of the application of stoichiometry in experiments.Txt Column tree navigation Join the collection Sitemap Home The subject teaching curriculum teaching plan teaching reference thesis team preliminaries final results Aosai Gallery forum message resources course guiding classroom coaching example of extracurricular experiment to explore the basis of innovation of college entrance examination questions Zhenti special doubts solving prediction of junior middle school Your present position: Chemistry counseling Station, course guidance, knowledge can guide learning a required text Review of the application of stoichiometry in experiments. Author: hxfdz article source: the original number of hits: 113, update time: 2009-4-24 (a) the amount of substance and its unit molar 1. the amount of substance The quantity of matter, like physical quantities such as length, mass, time, electric current, is also a physical quantity. To be more specific, the quantity of matter is a physical quantity that measures the number of particles contained in a particle collectively by using the molar as a unit. The sign of the quantity of matter is n. 2. moles Moore is the amount of substance of the unit, 1 mol of any particles with the particle number 0.012kg and a carbon atom (12C) containing carbon atoms are equal, and the provisions of Moore as the amount of substance units. Moore referred to as friction, number of symbols containing 12C for mol. in 0.012kg12C is 6.02 * 1023. 3. Avogadro constant The number of carbon atoms in 0.012kg12C is called the A Vogadero constant, and the sign of the A Vogadero constant is NA (two) molar mass and molar volume of gas 1. molar mass The mass of a substance in a unit mass is called molar mass, the symbol of molar mass is M, and the commonly used unit is g/mol or kg/mol. The relation between 2. molar mass and relative atomic mass (1) the molar mass of an atom or a simple ion, in g/mol, equal in number to the relative atomic m