Calculate the average kinetic energy of a sample of gas at 298 K. Based on that, find the average velocity of 1 mol of the following gases at 298 K. (Hint: Use KEavg =(1/2)NAmv2 , where m is the mass of a gas molecule, v is the average velocity, and NA is the Avogadro number.) (4 points) a) CO2 b) N2 c) SO3