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1 janv. 1794 - Joseph Louis Proust

Description:

The French chemist discovered that chemical compounds always combine in constant proportions (Law of Constant Composition). The law also helps us to understand that no matter how a compound is created, it is composed of exact element proportions.

Ajouté au bande de temps:

1 janv. 2020
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Date:

1 janv. 1794
Maintenaint
~ Il y a 231 ans