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uyenuyen72
2 năm trước
cho m(g) hỗn hợp x ( etilen,axetilen) vao dd nc brom dư thấy khối lượng brom tăng 5,4g mặt khác cho lượng hỗn hợp X trên vào dd AgNO3 trong dd NH3 du thu dc 2,4g ket tua. tính m cac chất trong X Mong ad lm cho mk bài này
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