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htrang7105
2 năm trước
Hòa tan hoàn toàn 11,9g hỗn hợp A gồm Al và Zn trong 245g dd H2SO4 20% thu được dd B và 8.96l khí H2 (đktc). a/ Tính %m từng kim loại trong hỗn hợp ban đầu. b/ Tính C% các chất trong dd B.
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