T
thanhmatta


Hon hop X gom 2 este don chuc .xa phong hoa hoan toan 0.3mol dung het 0.4mol NaOH.thu duoc 1 andehit va dung dich Z .co can dung dich thu duoc 32g chat ran .biet % khoi luong cua oxi trong andehit 27.59%.cong thuc cua 2 este .mong moi nguoi giup do