Giúp mik vs Cho 6,72 lít điều kiện tiêu chuẩn hỗn hợp CH4 và c2h 4 đi qua bình đựng nước brom dư thấy có 2,2(dktc) bay ra khỏi bình.tínhh thể tích mỗi khí trong hỗn hợp F

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