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huongthoi0000
2 năm trước
Trong phòng thí nghiệm, để điều chế oxi, người ta phân hủy 47,4 (g) KMnO4. 1) Tính thể tích khí oxi thu được (đktc). 2) Cho photpho cháy trong oxi thu được ở trên. Tính khối lượng photpho phản ứng và khối lượng sản phẩm thu được?
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