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16 März 1795 Jahr - Proust (1794) - Law of Definite Proportions: a pure substance will always contain the same elements, combined in the same proportion for mass.
Zugefügt zum Band der Zeit:
Chem Project
By
Alyssa George
27 Sep 2017
0
0
529
Datum:
16 März 1795 Jahr
Jetzt
~ 229 years ago
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