65. (V20/21-140-20) Kumush nitrat eritmasiga 80 g mis plastinka botirildi. Kumush batamom plastinkaga otirganda, plastinka massasi 7,6%ga ortdi. Hosil bolgan mis (II) nitrat va sarflangan kumush nitrat massasini (g) aniqlang?
A) 3,76; 5,8 B)4,32; 8,2
C) 7,52; 13,6
D) 9,42; 12,4