Question

__ Cu + ___ HNO₃ → ___ _Cu(NO₃)₂ + ___ NO₂ + ___ H₂O

Answer 1

the balanced equation is

2Cu + 8HNO₃ → 2Cu(NO₃)₂ + 4NO₂ + 4H₂O

Cu + 4HNO₃ → Cu(NO₃)₂ + 2NO₂ + 2H₂O

Answer 2

Cu + 4HNO3 ---> Cu(NO3)2 + 2NO2 + 2H2O.

Step-by-step explanation:

Balancing:

Cu + 4HNO3 ---> Cu(NO3)2 + 2 NO2 + 2H2O.