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xuanhoannhi80
2 năm trước
Hãy tính a/ Khối lượng của 0,2 mol Fe 2 O 3 b/ Số mol của 10 gam Na O H c/ 0,2 mol khí oxi (O2) ở đktc có thể tích là bao nhiêu? d/ 1,12 lít khí A ở đktc có số mol là bao nhiêu?
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