Question

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Answer 1

(1) 2KMnO4K2MnO4+MnO2+O2¡ü   
(2) C+ 2CuO2Cu + CO2¡ü
(3)Ca(OH)2+CO2===CaCO3¡ý+H2O     
(4) C + O2CO2
(5) H2O + CO2="=" H2CO3                       
(6) 2Na2O2+2CO2==2Na2CO3+O2
(7) 2Mg+CO22MgO+C

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