Answer:
1 x 10^28
Explanation:
1276704
Do what is in parenthesis first then multiply them together.
the triangular model and the cubic model
Cu + 4HNO3 ---> Cu(NO3)2 + 2NO2 + 2H2O.
Balancing:
Cu + 4HNO3 ---> Cu(NO3)2 + 2 NO2 + 2H2O.
yes
solid