CxHy+O2=CO2+H2O; n(CO2)=84:22,4=3,75; n(H2O)=67,5:22,4=3;n(CxHy)=28:22,4=1,25 1,25 3,75 3 CxHy + O2 =CO2 + H2O :1,25 1 3 3 CxHy+O2=CO2+H2O CxHy+O2=3CO2+3H2O x=3;y=6; C3H6-пропен.