143. Solving a chemistry problem

6.23. Below are the experimental data on nitrogen adsorption on TiO2 (rutile) at 75 K:
P * 102, Pa 60.94 116.41 169.84 218.65 275.25
A, mol / kg 0.367 0.417 0.467 0.512 0.567
Build a graph corresponding to the linear BET equation. Find the constants A and C. Calculate the specific surface of the adsorbent. Saturated nitrogen vapor pressure at specified temperature Ps
= 78 300 Pa, the area occupied by one nitrogen molecule is S0 = 0.16 nm2.