clorura de vinil = C2H3Cl, miu = 62,5 kg/kmol
acetat de vinil = C2H3OOCCH3 = 86 kg/kmol
notam cu a = nr kmoli monomer C2H3Cl
notam cu b = nr kmoli monomer C2H3OOCCH3
62,5a + 86b = 100 kg
a/b = 1/0,128 => a = 7,81b
=> 62,5x7,81b + 86b = 100
=> b = 100/574,28 = 0,174 kmoli monomer C2H3OOCCH3
=> a = 7,81b = 1,36 kmoli monomer C2H3Cl
=> 62,5a = 85 kg monomer C2H3Cl
=> 86b = 15 kg monomer C2H3OOCCH3
=> C.