black sulfuric acid

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• Black, Joseph — ▪ British scientist Introduction born April 16, 1728, Bordeaux, France died Nov. 10, 1799, Edinburgh, Scot.  British chemist and physicist best known for the rediscovery of “fixed air” ( carbon dioxide), the concept of latent heat, and the… …   Universalium

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• nitrogen group element — ▪ chemical elements Introduction  any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… …   Universalium