CxHyNz + O2=CO2+H2O+N2 0.48=x---------1.7 0.14=x------------1.26 C + O2 = CO2 2H2 + O2 = 2H2O 12---------------44 4-----------------36 m(N2)=0.9-(0.48+0.14)=0.28 n(C)=0.48/12=0.04 моль n(H)=0.14/1=0.14 моль n(N)=0.28/14=0.02 моль 0,04/0,02=2 0,14/0,02=7 0,02/0,02=1 C2H7N Mr(CxHyNz)=22.5*2=45 C2H7N=45