M trinitrat de glicerina=227g/mol
4C3H5(ONO2)3 --> 12CO2 + 10H2O + 6N2 + O2
Aflăm nr moli de trinitrat de glicerina ===>
980kg/227kh * 75/100=3 kmoli
4kmoli..............19kmoli
3kmoli.............x=14.25 kmoli gaze
n=V/Vmolar ===> V=n*Vmolar=14.25*22.4=319.2 m3 gaze