CU+4HNO3(浓)=CU（NO3）2+2NO2↑+4H2O
3CU+8HNO3(稀)=3CU（NO3）2+2NO↑+4H2O
由于反应的进行~!HNO3由 浓→稀
（1）CU+4HNO3(浓)=CU（NO3）2+2NO2↑+4H2O
1--- 4 ------------------2
X----4X------------------2X
（2）3CU+8HNO3(稀)=3CU（NO3）2+2NO↑+4H2O
3 8 2
Y 8Y/3 2y/3
x+y=0.0384/64=0.0006mol
2x+2y/3=0.0224/22.4=0.001mol
x=0.00045
y=0.00015
n(HNO3)=4x+8Y/3=0.0018+0.0004= 0.0022mol