Calculate the volume occupied by 1.00 mol N2 using the van der Waals equation in the form of a virial expansion at its Boyle temperature. Assume that the pressure is 10 atm throughout. At what temperature is the gas most perfect? Use the following data: Tc = 126.3 K, a = 1.390 dm6 atm mol^-2, b = 0.0391 dm3 mol^-1