PTHH: \(3Cu+8HNO_3\rightarrow3Cu\left(NO_3\right)_2+2NO+4H_2O\)
______0,225<-------------------------------------0,15_____________(mol)
\(Cu+4HNO_3\rightarrow Cu\left(NO_3\right)_2+2NO_2+2H_2O\)
0,15<-------------------------------------0,3_____________________(mol)
=> \(n_{Cu}=0,225+0,15=0,375\left(mol\right)\)
=> \(m_{Cu}=0,375.64=24\left(g\right)\)