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mar 16, 1795 - Proust (1794) - Law of Definite Proportions: a pure substance will always contain the same elements, combined in the same proportion for mass.

Added to timeline:

10 months ago
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193
Chem Project
Alyssa George, Riley Gloeckl, Grace Bair, Sonja Hebestreit

Date:

mar 16, 1795
Now
~ 223 years ago
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