English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 066 Co(CN)2 cobalt(II) cyanide Co(C2H3O2)2 cobalt(II) acetate Co(C2H3O2)3 cobalt(III) acetate CoC2O4 cobalt(II) oxalate Co(ClO4)2 cobalt(II) perchlorate CoCl2 cobalt(II) chloride CoCrO4 cobalt(II) chromate CoCr2O4 cobalt(II) chromite