|Amedeo Avogadro, Jean Baptiste Perrin stoichiometry|
The number of particles in a mole of any element The number of particles in twelve grams of carbon-12 6.022140857 × 1023 give or take 0.000000074 x 1023 In 1909, Jean Baptiste Perrin determined its value and named it after Amedeo Avogadro.
The number of atoms or molecules in a given volume of gas is the Loschmidt constant. The pressure times the volume of a gas divided by its temperature times the number of particles is the Boltzmann constant. A mole of electrons has an electric charge equal to the Faraday constant.
Macro and micro
The Avogadro constant is the scaling factor between the atomic scale and the scale in which we appreciate things made of atoms. * O portal to the Hidden World, Thru your glorious Lens We see the invisibly Small!