3. Liquid nitrogen. Use the truncated virial equation to answer the questions below: a. A 5 mtank contains nitrogen at 110 K, 7 bar. How many kg of nitrogen are in the tank? b. The tank is cooled until the contents become saturated vapor. What is the pressure and temperature in the tank? c. Is the use of the truncated virial equation justified in this problem? Additional data: The saturation pressure of nitrogen is given by the Antoine equation 588.72 psat (T) = e14.9542-6.6+1 with psal in mm Hg and T in Kelvin