Which Happened First?

Joseph Proust

Joseph Proust
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Joseph Louis Proust was a French chemist. He was best known for his discovery of the law of definite proportions in 1797, stating that elements always combine in constant proportions in chemical compounds.

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Who was born first?

Timeline

  1. Franz Xaver von ZachJune 4, 1754 – September 2, 1832
  2. Jean-François Pilatre de RozierMarch 30, 1754 – June 15, 1785
  3. Joseph Proust (this page)September 26, 1754 – July 5, 1826
  4. Jurij VegaMarch 23, 1754 – September 26, 1802
  5. Fausto ElhuyarOctober 11, 1755 – February 6, 1833
  6. Samuel HahnemannApril 10, 1755 – July 2, 1843

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