117. Solving a chemistry problem

218. At 0 ° C, the volume of methane adsorbed by charcoal was measured as a function of methane pressure:
r, mm. Hg 100 200 300 400
V*, cm3/g 9.75 14.5 18.2 21.4
* The volume is given to normal conditions
Determine the coefficients of the Freundlich equation. (To avoid difficulties with the units of measurement of the Freundlich constant, express the pressure in relative units p / po, where po \u003d 760 mm Hg, then the constant will be in cm3 / g).