... 30 C 30 31 B 31 25 B 26 D lt C l6 D JZ A A 32 A JJ JJ D c t2 25 A 26 c 27 A 28 C 29 B 30 B 27 c 28 B 29 A 30 B 22 C aa B 24 B D 2B B 29 C 30 D 31 B 31 D ?.1 32 33 34 35 36 37 20 32 33 34 35 36 ... 36 37 32 33 B 34 35 36 D J/ C D B A B AA AA 35 35 ?A B JO D 37 D 38 C eo D a'7 38 D ?o D A 3B C )O 39 C 4A B 40 B 40 B 39 40 B ao U 4A D 41 D 41 B 41 D 41 D 41 D c A.) D B 43 D 42 43 B 42 B 43 ... C .3, 99g ,4.5,079 E 10, 839 Cho biet : H:1, O:2, Ag:108, Na: 23, K :39 , Ca=40, Ba: 137 , Mg:24, Zn:65, Cu:64, Fr55, Al:27, P :31 C:12, S :32 , Cl :35 ,5, Br:80, N:l4, Ni:59, Pb:207 Trang 4/4 - Ma d6 thi 30 1...