V
vuduclong25


ai cho to; hoi? caj'
CH2=CH-CH3 + HClO -> caj' je` va` co* che^" phan? ung' nhu the^" na`o ( caj' tach' electrophin y')!! thanks nha
CH2=CH-CH3 + HClO -> caj' je` va` co* che^" phan? ung' nhu the^" na`o ( caj' tach' electrophin y')!! thanks nha