143. Solving a chemistry problem

6.8. The amount of (V) CO (273 K and 1.01 * 10 ^ 5 Pa) adsorbed per gram of coal at 273 K and various pressures is as follows:
P * 10–3, Pa 9.8 24.2 41.3 60.0 72.5
V * 106, m3 / g 2.53 5.57 8.43 11.20 12.85
Build the adsorption isotherm V = f (P) and p / V = f (P); describe the adsorption isotherm using the Langmuir equation; determine the adsorption value (m3 / g) at maximum adsorbent filling, determine the degree of adsorbent filling at a pressure of 5 * 10 ^ 4 Pa; determine at what gas pressure the degree of filling of the adsorbent is 0.4.