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Tritai47
2 năm trước
Cho 4,8 gam kim loại M hóa trị x tác dụng với 0,3 mol HCI sau phản ứng kim loại chưa tan hết. Nếu cho cùng một lượng kim loại trên tác dụng với 0,5 mol HCI thì sau phản ứng vẫn còn dư axit. Xác định tên kim loại biết hóa trị của hóa trị từ I đến III. Giúp em với ạ,em cảm ơn
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