The balanced chemical equation for the combustion of ethane C2H6 in the presence of excess oxygen is:C2H6 + 7/2 O2 2 CO2 + 3 H2OFrom the balanced equation, we can see that 1 mole of ethane C2H6 produces 2 moles of carbon dioxide CO2 . If 5 moles of ethane are burned, the amount of carbon dioxide produced can be calculated as follows:5 moles C2H6 2 moles CO2 / 1 mole C2H6 = 10 moles CO2So, 10 moles of carbon dioxide will be produced when 5 moles of ethane are burned.