Đốt cháy hoàn toàn m gam một anken X có thể tích 1,12 lit. Dẫn toàn bộ sản phẩm cháy vào dung dịch nước vôi trong dự thu được 25 gam kết tùa và khối lượng bình tăng 15,5 gam. Tìm CTPT của X Mọi người ơi chỉ mình với

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