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bangtam381
2 năm trước
Bài 1: Dùng khí H2 để khử hoàn toàn 32 gam hỗn hợp gồm Fe2O3và CuO có tỉ lệ khối lượng 2 oxit là 2:3 a. Tính phần trăm khối lượng kim loại thu được. b. Tính thể tích khí H2 (đktc) tham gia phản ứng
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