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phkhanhhuyen2812
2 năm trước
Hỗn hợp X có tỉ khối so với H 2 là 21,2 gồm propan, propen và propin. Đốt cháy hoàn toàn 0,15 mol X, dẫn toàn bộ sản phẩm vào bình chứa dung dịch Ba(OH) 2 dư thấy khối lượng bình tăng m gam và xuất hiện a gam kết tủa. Giá trị m và a lần lượt là
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