# Why Avagodro number is 6 022

## Amedeo Avogadro Constant and Law

Amedeo Avogadro was a successful Italian physicist and chemist. We deal with his findings - the Avogadro constant - and Avogadro's law in this section. This article belongs to the basics of chemistry.

In this article we looked at Avogadro's constant and Avogadro's law. I will go into the important fundamentals of chemistry again in a moment in order to understand exactly these relationships. However, if you have any major gaps in your previous knowledge, I advise you to read the following articles first:

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First, a quick reminder: One mole of a substance contains about 6,022 x 10 823 Particle. If you take one mole of oxygen or one mole of copper, you always get 6.022 · 1023 Particles of this substance. A particle is understood to be a core particle, i.e. protons and neutrons together. This was named Avogadro constant N after the Italian physicist and chemist Amadeo AvogadroA. with the unit 1 / mol (spoken: one per mol).

With this number one can convert the atomic mass - given in "u" - into the mass in grams, which is 6.022 · 1023 Own atoms. To achieve this, the Avogadro constant is multiplied by the atomic mass (1u = 1.661 · 10-24 G). The result is called the molar mass. The following examples should make this easier to understand. It is best to open the periodic table of the elements (show periodic table in a new window). There is also the necessary information for the elements, which was also used for the following calculations:

• Oxygen: 6.02 x 1023 / mol x 16 x 1.661 x 10-24 g = 16 g / mol
• Copper: 6.02 x 1023 / mol x 63.5 x 1.661 x 10-24 g = 63.5 g / mol
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