140. Solving a chemistry problem
Calculate the work of adhesion for water, glycerin, tricresyl phosphate and benzene, which wet fluoroplastic. The surface tension (at the border with air) of water, glycerol, tricresyl phosphate, and benzene is 71.96, respectively; 63.2; 40.9; 28.9 mJ / m2, and the contact angles are 108, 100, 75, and 46.
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