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duongkb2013
2 năm trước
Đốt cháy hết 48g quặng pirit sắt (FeS2) trong lượng vừa đủ 35,2g khí oxi (O2) Được 32g sắt III Oxit (Fe2O3) và m gam Lưu huỳnh đioxit (SO2). a) Lập PTHH biểu diễn phản ứng trên? b) Tính gt của m. c) Nếu khối lượng FeS2 đã phản ứng là 12 tấn thì Khối lượng Fe2O3 tạo ra là bao
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