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minhtudeptrai046
2 năm trước
Cho 13g kim loại X ( có tổng số hạ là95 trong đó số hạt k mang điện gấp 7 phần 6 lần số hạt mang điện tích dương) tác dụng với 21,9 g HCl sau p ứng thu đc dung dịch A và Vlit H2 thoát ra ở điều kiện tiêu chuẩn xác định m A và Vlit H2 đkTC (em cần gấp mong mấy ah chị giúp em )
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