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1 Jan 1794 Jahr - Joseph Louis Proust

Beschreibung:

Joseph Louis Proust was a French chemist who created the Law of Definite Proportions. This law states that a chemical compound will always have its base elements in a fixed ratio no matter the source or method of preparation. This law by Proust is now the principal of anylitical chemistry.

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Datum:

1 Jan 1794 Jahr
Jetzt
~ 232 years ago

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