What would be the instantaneous rate of evaporation of water from each square centimeter of its surface if there was a vacuum above this surface, and the temperature of the water at that moment was 300 K? The tabulated value of saturated water vapor pressure at this temperature is P = 27 mm Hg. Compare the obtained value with the rate of water evaporation under normal conditions (i.e., when there is air above the surface of the water at normal pressure) and explain the resulting discrepancy.

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