A. Calculate the van der Waals parameters a and b from critical point data for the following gases: He, CHa, and CCI. B. Please calculate a and busing equations below and Table 4.2 in the book. TABLE 4.2 Lennard-Jones Parameters for Several Species Gas He H. CH , F CI, e/k(K) 10.2 35.7 205 440 112 307 101 S6 327 148.2 31.6 120 190 229 507 252 () 2.58 2.94 4.23 5.27 3.65 4.62 3.5 3.7 5.85 3.82 2.8 3.4 3.6 4.1 3.6 4.3 b = nO NA (2) 0 N, CCI CH, Ne Ar Xe CH OH 2nN? a = 303 SO, C. Please compare results from A and B. D. Explain the relative magnitudes of a and b from a physical basis