Get oxides in all possible ways: CaO, carbon monoxide (IV). Write down the reaction equations.

2Ca + O2 = 2CaO;

CaCO3 = CaO + CO2;

2Ca(NO3)2 = 2CaO + 4NO+ O2.

C + O2 = CO2;

CaCO3 + 2HCl = CaCl2 + CO2 + H2O.




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