D: oxid triatomic E2On, E=nemetal, n = valenta nemetalului
miu.E2On = 2Ae+16n, Ae = masa atomica a lui E
100% .................................. 50% O
2Ae+16n ....................... 16n g O
=> 2Ae = 16n => Ae = 8n
daca n = 1 => Ae = 8=> NU
daca n = 2 => Ae = 16 => Nu
daca n = 3 => Ae = 24 => Nu
n = 4 => Ae = 32 => S
=> oxidul D = S2O4 => SO2
miu(B)/miu(D) = 11/16, miu(D) = 32+16x2 = 64 g/mol
=> miu(B) = 64x11/16 = 44 g/mol
=> CO2
b)
SO2 + H2O --> H2SO3
CO2 + H2O --> H2CO3
c)
caracter acid
