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ò O MgO 3 Mg + N2 Mg3N2 - chemie.uni-hamburg.de · Cr 2 O 7 2-- 2 PX ± , ,HUJHEHQ PO 4 3-- 3 PX ± , ,,H UJHEHQ H 3 O + + 1 muß + I ergeben 6 . Ermittlung von Oxidationszahlen
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