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KhangBrian
2 năm trước
Hòa tan hoàn toàn 15,4g hỗn hợp Mg và Zn trong dung dịch HCL dư thấy có 6,72 lít. Khi thoát ra và dung dịch A. Cô cạn dung dịch A thu được a gam muỗi khan A) xác định thành phần phần trăm hỗn hợp kim loại ban đầu
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