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The first chemist to formally state the law of constant composition was?
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∙ 12y ago
Proust
Wiki User
∙ 12y ago
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Who developed the law of definite composition?
In chemistry, the law of definite proportions and also the elements, sometimes called Proust's Law, states that a chemical compound always contains exactly the same proportion of elements by mass. An equivalent statement is the law of constant composition, which states that all samples of a given chemical compound have the same elemental composition.This observation was first made by the French chemist Joseph Proust based on several experiments conducted between 1798 and 1804. Based on such observations, Proust made statements like this one, in 1806:
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Oxygen was discovered for the first time by a Swedish Chemist, Carl Wilhelm Scheele, in 1772. Joseph Priestly, an English chemist, independently, discovered oxygen in 1774 and published his findings the same year, three years before Scheele published. Antoine Lavoisier, a French chemist, also discovered oxygen in 1775, was the first to recognize it as an element, and coined its name "oxygen" - which comes from a Greek word that means "acid-former". Where is was found? I do not know.
Who found oxygen?
Oxygen was discovered for the first time by a Swedish Chemist, Carl Wilhelm Scheele, in 1772. However English chemist Joseph Priestly discovered it independently in 1774. Since Priestly published his findings in 1775 and Scheele's findings were not published until 1777, Priestly is usually credited with the discovery.
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