Bài 3 : Hòa tan hoàn toàn 5,4g Al vào dd HCl 0,8M a. Viết PTHH. Tính thể tích khí sinh ra ở đktc? b. Tìm khối lượng muối tạo thành? Tính thể tích dd HCl cần dùng cho phản ứng trên?

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