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1 jan 1794 ano - Joseph Louis Proust

Descrição:

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.

Adicionado na linha do tempo:

Data:

1 jan 1794 ano
Agora
~ 231 years ago