A 500-L tank stores 100 kg of nitrogen gas at 150 K. To design the tank the

Question:

A 500-L tank stores 100 kg of nitrogen gas at 150 K. To design the tank the pressure must be estimated and three different methods are suggested. Which is the most accurate, and how different in percent are the other two?
a. Nitrogen tables, Table B.6
b. Ideal gas
c. Generalized compressibility chart, Fig. D.1