English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 119 Fe3O4 magnetite or triiron(II, III) tetraoxide Fe3P iron(tri) phosphide Fe7Si8O24H2 amosite GaAs gallium(III) arsenide GaAsO4 gallium(III) orthoarsenate GaBr3 gallium(III) bromide Ga(C2H3O2)3 gallium(III) acetate GaCl2 gallium(II) chloride