85. Solving a chemistry problem

3. When studying hydrogen adsorption on activated carbon, the following data were obtained
p*10-2 5.66 10.63 17.89 23.83 46.23
a*103, m3/kg 15.9 19.7 24.9 28.1 37.3
(p is the equilibrium vapor pressure, a is the adsorption value). Calculate the constants of the Langmuir equation and the specific surface area of ​​activated carbon, Taking the density of hydrogen to be 0.0899 kg/m3 and the area occupied by one hydrogen molecule on the surface of the adsorbent to be 0.09 nm2.