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Naturally occurring hydrogen consists of three isotopes : hydrogen - 1 , or protium , 99.985 percent ; hydrogen - 2 , or deuterium ( q.v. ) , 0.015 percent ; and hydrogen - 3 , or tritium ( q.v. ) , a minute trace .
hydrogen chloride 242 Hydrochloric acid is present in the digestive monia or sodium cyanide . Hydrocyanic acid juices of the human stomach . Excessive secre- ( the aqueous solution of hydrogen cyanide ) is tion of the acid causes ...
agricultural damage causes 1 : 360f molecular orbital structure 4 : 90g · Petroleum alkylation process 14 : 184a Venus atmosphere composition , table 2 19:79 hydrogen iodide ( HI ) , a compound containing the elements hydrogen and ...
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review
when the International Telegraph Union
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