Ответ:
1) K2O+H2O=2KOH
2KOH+Cu(NO3)2=Cu(OH)2+2KNO3
2) 2KOH+H2SO4=K2SO4+H2O
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Ответ:
1) K2O+H2O=2KOH
2KOH+Cu(NO3)2=Cu(OH)2+2KNO3
2) 2KOH+H2SO4=K2SO4+H2O