22. Solving a chemistry problem

6.10. The amount (V) of H2 (273 K and 1.01 * 105 Pa) adsorbed by 1 g of carbon at 273 K and various pressures is as follows:
P*10–3, Pa 27.6 43.4 57.4 72.2 86.1
V*106, m3/g 0.447 0.698 0.915 1.142 1.352
Plot 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 filling of the adsorbent; determine the degree of filling of the adsorbent at a pressure of 2*104 Pa; determine at what gas pressure the degree of filling of the adsorbent will be 0.4.