Ответ:
K+O2=K2O
K2O+CuOH=CuO+KOH
KOH+H2SO4=K2SO4+H2O
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Ответ:
K+O2=K2O
K2O+CuOH=CuO+KOH
KOH+H2SO4=K2SO4+H2O