-calculez moli CO2
niu(n)= V/Vm
niu= 1,12l/ 22,4l/mol=0,05molCO2
-ecuatia reactiei de ardere
1mol.....................3mol
C3H8 +5O2----> 3CO2+4H2O
n=.......................,0,05mol
n=0,05/3molpropan
V= n xVm
V=0,05/3 lx22,4l/mol= ...calculeaza !!!!!