At a temperature of 10C the percent relative humidity is R10, and at 40C it is R40.

At a temperature of 10°C the percent relative humidity is R10, and at 40°C it is R40. At each of these temperatures, the partial pressure of water vapor in the air is the same. Using the vapor pressure curve for water that accompanies this problem, determine the ratio R10/R40 of the two humidityvalues.

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