Mr ( H2SO3) = 1*2 + 32 + 16*3 = 82
Mr(Ca3(PO4)2) = 40*3 + 31*2 + 16 * 8 = 310
Mr(Cu(OH)2) = 64 + 16*2 + 1*2 = 98
Mr (SO3) = Ar (S) + 3 Ar (O) = 32 + 3 * 16 = 80 г/моль
Мr (Ca3(PO4)2) = 3 Ar (Ca) + 2 Ar (P) + 8 Ar (O) = 3 * 40 + 2 * 31 + 8 * 16 = 310 г/моль
Мr (Cu(OH)2) = Ar (Cu) + 2 Ar (O) + 2 Ar (H) = 64 + 2 * 16 + 2 * 1 = 98 г/моль
Mr ( H2SO3) = 1*2 + 32 + 16*3 = 82
Mr(Ca3(PO4)2) = 40*3 + 31*2 + 16 * 8 = 310
Mr(Cu(OH)2) = 64 + 16*2 + 1*2 = 98