A parcel of air at 25°C is completely saturated with a vapor pressure of 30 mb. Cloud formation removes water vapor from the atmosphere resulting in a new vapor pressure of 15 mb at the same temperature of 25°C. What is the relative humidity of the parcel of air at 25°C and 15 mb?
A. 15%
B. 15 mb
C. 50%
D. 50 mb
Answer: C
Environmental & Atmospheric Sciences
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