\(n_{Cu}=\dfrac{9,6}{64}=0,15\left(mol\right)\\3 Cu+8HNO_3\rightarrow3Cu\left(NO_3\right)_2+2NO+4H_2O\\ n_{HNO_3}=\dfrac{8}{3}.0,15=0,4\left(mol\right)\\ n_{Cu\left(NO_3\right)_2}=n_{Cu}=0,15\left(mol\right)\\ n_{NO}=\dfrac{2}{3}.0,15=0,1\left(mol\right)\\ V=V_{NO\left(đktc\right)}=0,1.22,4=2,24\left(l\right)\\ m_{Cu\left(NO_3\right)_2}=188.0,15=28,2\left(g\right)\\ m_{HNO_3}=63.0,4=25,2\left(g\right)\)