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Reference.org
Jean-Baptiste Dumas
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<p>Jean Baptiste André Dumas was a French <a href="/facts/Chemist/N09K7Bdm">chemist</a>, best known for his works on organic analysis and synthesis, as well as the determination of <a href="/facts/Atomic_weight/A3vbuz2n">atomic weights</a> (relative atomic masses) and <a href="/facts/Molecular_weight/FWueGMed">molecular weights</a> by measuring <a href="/facts/Vapor/PLlojGug">vapor</a> densities. He also developed a method for the analysis of <a href="/facts/Nitrogen/Nf1QpGDz">nitrogen</a> in compounds. </p>