If the Hydrocarbon C2H4 is burned in Oxygen gas, Carbon dioxide and water are formed, as described by the unbalanced chemical equation
C2H4 + O2 → CO2 + H2O
When the equation is balanced properly, we predict that one mole of C2H4 will :
1
react with one mole of O2
2
form two moles of CO2
3
form three moles of water
4
react with four moles of O2