... 2- ) hu nh cỏc mui sunfua iu khụng tan, ch cú mui ca kim loi kim v kim th tan (Na 2S, K2S, CaS, BaS) Mt s mui khụng tan v cú mu c trng CuS en, PbS en, CdS vng, SnS gch, MnS hng nhn bit S 2- ... 31,62% 33) Cho 10,38 gr hn hp gm Fe, Al v Ag chia lm phn bng nhau: - Phn 1: Tỏc dng vi dung dch H2SO4 loóng d thu c 2,352 lit (kc) - Phn 2: Tỏc dng vi dung dch H2SO4 , núng d thu c 2,912lit khớ SO2 ... cht dung dch A 57) Mt hn hp A gm Fe v mt kim loi M hoỏ tr -Hũa tan hon ton 12,1g hn hp A bng H2SO4 loóng thỡ thu c 4,48lớt khớ H2(kc) -Hũa tan hon ton 12,1g hn hp A bng H2SO4 c núng thỡ thu c...