52. Solving a chemistry problem
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239. With a decrease in the concentration of novocaine in a solution from 0.2 mol∕l to 0.15 mol∕l, the surface tension increased from 6.9•10-2N∕m to 7.1•10-2N∕m; from 6.5•10-2N∕m to 7.0•10-2N∕m. Compare the adsorption values of two substances in a given concentration range. T = 293 K
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