D
dunga4k89


cho m gam Na vao 250 ml dd hon hop HCl 0,5M va AlCl3 0,4M thu duoc (m-3,995)gam ket tua,ddX va khi H2,m co gia tri la:
A.7,728g hoac 12,788g B.10,235g
C.7,728g D.10,235g hoac 10,304g
A.7,728g hoac 12,788g B.10,235g
C.7,728g D.10,235g hoac 10,304g