106. Calculate the adsorption of butyric acid at the aqueous solution - air interface at 283 K and a concentration of 0.104 mol/l, using the following experimental data:
C, mol/l 0 0.021 0.050 0.104 0.246 0.489
b*103.N/m 74.0 69.5 64.3 59.9 51.1 44.0

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