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nguyen.hien.nga2k1
2 năm trước
Cân bằng các pt sau : 1) Cu($NO_{3}$) $_{2}$ --> CuO + $NO_{2}$ + $O_{2}$ 2) $AgNO_{3}$ ---> Ag + $NO_{2}$ + $O_{2}$ 3) $ $Al(NO3$)_{3}$ --> Al2O3 +NO2 + O2 4) Al(OH)3 --> Al2O3 + H2O 5) Fe(OH)2 + O2 --> Fe2O3 + H2O Hỏi cho vui :3
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