C2H4 +3O2 =?CO2 +2H2O The number of CO2 molecule s that are needed to balance the equation are
two (2)
that is C2H4 +3O2 = 2CO2+ 2H2O 1 molecule of ethane (C2H4) is burned in presence of oxygen to form 2 molecules of carbon(iv) oxide (CO20 and 2 molecules of water(H2O)
