English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 018 Au(OH)3 gold hydroxide AuTe gold telluride Au2O3 gold trioxide Au2S gold sulphide Au2S3 gold trisulfide Au2(SeO4)3 gold triselenate Au2Se3 gold triselenide BAs boron arsenide