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jan 1, 1730 - 1778 Lavoisier established the Law of Conservation of Mass, which says that mass is not lost or gained during a chemical reaction.
Added to timeline:
Democritus to Dalton By Nadezhda D.
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Nadezhda Dominguez
14 Jan 2020
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Date:
jan 1, 1730
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~ 295 years ago
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