Napisz reakcję spalania całkowitego i nie całkowitego propanu butanu pentanu , heksanu  nonanu . Oblicz zawartość  procentową wodoru . Pierwsze 5 czyli propan ,butanu , heksanu  , nonanu . pentanu

C₃H₈+5O₂--->3CO₂+4H₂O C₃H₈+2O₂--->3C+4H₂O 2C₄H₁₀+13O₂--->8CO₂+10H₂O 2C₄H₁₀+5O₂--->8C+10H₂O C₅H₁₂+8O₂--->5CO₂+6H₂O C₅H₁₂+3O₂--->5C+6H₂O 2C₆H₁₄+19O₂--->12CO₂+14H₂O 2C₆H₁₄+7O₂--->12C+14H₂O C₉H₂₀+14O₂--->9CO₂+10H₂O C₉H₂₀+5O₂--->9C+10H₂O mC₃H₈=3*12u+8*1u=44u %H=8u*100%/44=18,18% mC₄H₁₀=4*12u+10*1u=58u %H=10u*100%/58=17,24% mC₆H₁₄=6*12u+14*1u=86u %H=14u*100%/86=16,28% mC₉H₂₀=9*12u+20*1u=128u %H=20u*100%/128=15,625% mC₅H₁₂=5*12u+12*1u=72u %H=12u*100%/72=16,67%