Объяснение:
1) 2Cu + O2 = 2CuO
2) CuO + HNO3 = Cu(NO3)2 + H2O
3) Cu(NO3)2 + Na2CO3 = CuCO3 + 2NaNO3
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Объяснение:
1) 2Cu + O2 = 2CuO
2) CuO + HNO3 = Cu(NO3)2 + H2O
3) Cu(NO3)2 + Na2CO3 = CuCO3 + 2NaNO3