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Bài 2: (3,5) Hoà tan hoàn toàn 19,46g một hỗn hợp gồm Mg, Al và Zn (trong đó số gam Mg = số gam
của nhôm) vào dd HCl 2M thấy sinh ra 16,352 lít H
2
( đktc )
a. Tính số gam mỗi KL đã dùng.
b. Tính thể tích dd HCl đã dùng biết rằng người ta đã dùng dư 10% so với lý thuyết.
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và NO với 25ml không khí thu được 70ml hỗn hợp B .
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