On a particular hot day, the temperature is 40°C and ...
On a particular hot day, the temperature is 40°C and the partial pressure of water vapor in the air is 38.8 mmHg. What is the relative humidity?
70
62
80
42
Correct answer is A
Relative Humidity= \(\frac {partial pressure of H2O}{saturated vapor pressure of H2O}\)×100%
S.v.p. of water at 40°c = 55.3
⇒ Relative Humidity= \(\frac{38.8}{55.3}\)×100%
Relative Humidity= 70%
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