In an air-water vapor mixture at 30degc the partial

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In an air-water vapor mixture at 30°C, the partial pressure of the water vapor is 1.5kPa, and the partial pressure of the dry air is 100.5kPa.

a. What is the relative humidity of the air-water vapor mixture?

b. What is the humidity ratio of the air-water vapor mixture?

c. If the mass of water vapor in the mixture is 5kg, what is the mass of air?

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