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duaminha
2 năm trước
Hòa tan 3,14g hỗn hợp Al và Zn vào dd HCL 0,15M sau PƯ có 1,568 lít khí thoát ra .Tính thành phần phần trăm các chất.Để trung hòa HCL cần 200ml KOH 0,2M Tính Vhcl.Tính Vhcl đã dùng
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