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Để Thu khí Oxi người ta đun nóng KMnO4 a. Tính thể tích khí oxi co2 thu được ở( điều kiện tiêu chuẩn) khi đun nóng 9,48 KMnO4 b.để thu được thu 1 thể tích oxi như trên cần đun nóng bao nhiêu gam ClO3
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