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hjeunm
2 năm trước
dot chay hoan toan 17,2 gam este x thu duoc hon hop khi va hoi gom co2 va h20 . dan hon hop khi va hoi qua dung dich nuoc voi trong du thu 80g ket tua , dong thoi thay khoi luong dung dich nuoc voi trong giam 34g . so dong phan cua dung dich x la ? (cac ban giai chi tiet ho minh a)
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