... 2YClm + m H2O (4) Gi a l lng ban u ca mi kim loi v x l s mol ca mi kim loi ó tham gia phn ng (1) v (2) i vi kim loi X, cú: (P n 64 ).x = 1.a 100 (5) i vi kim loi Y, cú: ( m 207 Q).x 152.a 100 ... v kim loi R (húa tr khụng i) vo 200ml dung dch HCl 3,5M thu c 6,72 lớt khớ ( ktc) v dung dch B Mt khỏc nu cho 3,6 gam kim loi R tan ht vo 400 ml dung dch H2SO4 1M thỡ H2SO4 cũn d Xỏc nh : Kim ... hp gm st v mt kim loi A thuc nhúm IIA hũa tan hon ton dung dch HCl d thy to 0,672 lớt khớ (o ktc) Mt khỏc 0,95 gam kim loi A núi trờn khụng kh ht gam CuO nhit cao a Hóy xỏc nh kim loi A b Tớnh...