Your R&D department works on a proprietary fluid X for which only limited data are disclosed. Among the available information is that the SRK equation at T = 383.3 K, P = 8 bar gives three real roots for Z. These roots and the corresponding residual properties calculated at each value of the three values of Z are listed below:

Based on this information alone, how big of a tank would be needed to store 120 mol of this fluid at T = 383.3 K, P = 8 bar?

1 2 3 0.0332418 0.342355 0.624404 -34046.0 -6020.41 -3384.35 -13.4281 -6.42023 Z HR (J/mol) SR (J/mol K) -71.4816