Odpowiedź :
metan
CH4+2O2--->CO2+2H2O
2CH4+3O2--->2CO+4H2O
CH4+O2--->C+2H2O
propan
C3H8+5O2--->3CO2+4H2O
2C3H8+7O2--->6CO+8H2O
C3H8+2O2--->3C+4H2O
nonan
C9H20+14O2--->9CO2+10H2O
2C9H20+19O2--->18CO+20H2O
C9H20+5O2--->9C+10H2O
metan
CH4+2O2--->CO2+2H2O
2CH4+3O2--->2CO+4H2O
CH4+O2--->C+2H2O
propan
C3H8+5O2--->3CO2+4H2O
2C3H8+7O2--->6CO+8H2O
C3H8+2O2--->3C+4H2O
nonan
C9H20+14O2--->9CO2+10H2O
2C9H20+19O2--->18CO+20H2O
C9H20+5O2--->9C+10H2O