An OSU FPST alumni developed a new fire suppressant which is composed of 20 vol% of N2 and 80 vol % of CO2. How many moles of this suppressant should be added to extinguish one mole of methane flame? Use the critical adiabatic flame temperature at LFL. Methane's heat of combustion is 50 kJ/g. Use the following specific heat values: CO2 - 54.3J/mole-K, H20 - 41.3 J/mole-K, N2 -32.7J/mole-K. 0 4.6 moles 23 moles O 3.5 moles 5.9 moles