4. Based on the given data, construct an isotherm of polymolecular adsorption, determine the parameters of the adsorption equation and the specific surface area of the adsorbent (krypton ω=19.2•10−20 m2)
p, mmHg 0.16 0.21 0.27 0.34 0.52
V, cm3/kg 0.29 0.32 0.34 0.38 0.43
ps=2.57 mm Hg, ρ=3.74 g/l

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