Đốt cháy hoàn toàn 8,96 lít propan C3H8 bằng oxi trong không khí. A. Viết phương trình hóa học. B. Tính thể tích không khí cần dùng. Biết khí oxi chiếm 20% thể tích không khí. Khí đo ở đktc C. Để có lượng oxi trên, cần phải phân hủy tối thiểu bao nhiêu gam KMnO4 ? (Cho : O = 16; K = 39; Mn = 55; C = 12; H = 1)

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