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anbangharry
2 năm trước
Trong 153,5g hỗn hợp X gồm FeSO4, Fe2(SO4)3, CuSO4 có chứa 43,75% O theo khối lượng. Tính tổng khối lượng kim loại Fe và Cu có trong các hợp chất của hỗn hợp X
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