Hòa tan m gam hỗn hợp gồm Cu và Fe3O4 trong dung dịch HCl dư sau phản ứng còn lại 8,32gam chất rắn không tan và dung dịch X. Cô cạn dung dịch X thu được 61,92 gam chất rắn khan. Giá trị của m là: - Nguyễn Thủy
Hòa tan m gam hỗn hợp gồm Cu và Fe3O4 trong dung dịch HCl dư sa…
May 29, 2020
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