3. Calculate the equilibrium vapor pressure over water drops with a dispersion of 20 µm-1 at a temperature of 333 K, if the surface tension of water at a temperature of 293 K is 72.75 mJ/m2, and the temperature coefficient of surface tension db/dT = –0.16 mJ / m2 K. The pressure of saturated water vapor above a flat surface at 60 ° C is 20.58 * 103 Pa, and the density of water is 0.983 g / cm3.

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