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thanhdieu2507
2 năm trước
Viết PTHH thực hiện những biến đổi sau: a, Từ các chất KMnO4, Fe, Cu, HCl điều chế các chất cần thiết để thực hiện biến đổi: Cu -> CuO -> Cu b, Từ các chất: KClO3, Zn, Fe, H2SO4 loãng, điều chế các chất cần thiết để thực hiện biến đổi: Fe -> Fe3O4 ->Fe
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