139. Solving a chemistry problem
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139. Solving a chemistry problem
How much will the difference in water levels in two communicating capillaries with diameters of 0.1 and 0.3 mm change when heated from 293 to 343 K, if the surface tension at these temperatures is 72.5 and 64.0 mJ / m2, respectively. The density of water at 293 and 343 K is 0.998 g / cm3 and 0.780 g / cm3, respectively.
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