цепочка превращений
N2 ---- Li3N --- NO --- NO2 --- HNO3 ----- Cu(NO3)2 ----- O2
N2 +6Li = 2Li3N
Li3N + 2O2 = NO + 3Li2O
2NO + O2 = 2NO2
3NO2 +H2O--- 2HNO3 + NO
4HNO3 +Cu = Cu(NO3)2 + 2NO2+2H2O
2 Cu(NO3)2 -----2CuO + 4NO2 + O2
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Verified answer
N2 +6Li = 2Li3N
Li3N + 2O2 = NO + 3Li2O
2NO + O2 = 2NO2
3NO2 +H2O--- 2HNO3 + NO
4HNO3 +Cu = Cu(NO3)2 + 2NO2+2H2O
2 Cu(NO3)2 -----2CuO + 4NO2 + O2