Illustration of Avogadro constant

1811,1909 Avogadro constant

The book of science

Tom Sharp

Amedeo Avogadro, Jean Baptiste Perrin stoichiometry Illustration of Avogadro constant

Avogadro constant

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!

The value of the Avogadro constant is a very large number even though it’s a count of a small quantity of incredibly small things.

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