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Chocolate
2 năm trước
Câu 8: Cho m gam Mg tan hoàn toàn trong 182,5 gam dung dịch HCl 20% vừa đủ. Tính giá trị của m. Câu 9:Cho 0,69 gam kim loại kiềm tác dụng với nước dư thu được 336ml khí H2(đktc).Xác định tên kim loại.
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