Question

HN3+CuCO3-H2O+CO2+CU(NO3)2 balance equation​

Answer 1

I think you meant HNO3 + CuCO3 ---> H2O + CO2 + Cu(NO3)2. If so, then the balanced equation would be : 2 HNO3 + CuCO3 ---> H2O + CO2 + Cu(NO3)2