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kkllcchh
2 năm trước
11,2l hỗn hợp X(H2 và C2H6) có tỷ khối so với Oxi là 0.4125.Trộn 11,2l hỗn hợp X với 20,16l khí 02 rồi tiến hành đốt hỗn hợp sau phản ứng kết thúc tiến hành làm lạnh sản phẩm thu được chất lỏng A và khí B a) Tính % về thể tích mỗi khí trong hỗn hợp X b) Tính khối lượng A c) Tính% về thể tích và % về khối lượng các khí có trong B
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