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Các chất lấy ở dạng dung dịch màu vàng nâu là: A. Fe(NO3)3, FeCl3, Fe2(SO4)3. B. Cu(NO3)2, CuCl2, CuSO4. C. Fe(NO3)3, FeCl2, FeSO4. D. Cu(OH)2, Fe(OH)3, Fe(OH)2.
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