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Chemistry, 08.09.2021 18:20 jmt13happy
Cho 87g hỗn hợp X gồm: cu, al, fe chia làm 2 phần bằng nhau
Phần 1: Tác dụng với dung dịch hno3 đặc nguội dư thu được 11,2 lít khí
Phần 2: tác dụng với dung dịch HCl dư thu được 22,4 lít khí
Tính % khối lượng mỗi kim loại trong hỗn hợp ban đầu
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Cho 87g hỗn hợp X gồm: cu, al, fe chia làm 2 phần bằng nhau
Phần 1: Tác dụng với dung dịch hno3 đặ...
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