he observed the law of definite propotions?
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he observed the law of definite propotions?
he observed the law of definite propotions?
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Answer:
French chemist Joseph Proust proposed the law of definite composition or proportions based on his experiments conducted between 1798 and 1804 on the elemental composition of water and copper carbonate. In 1806, Proust summarized his observations in what is now called Proust's Law.