Q 31. A room contains 35 kg of dry air and 0.5 kg of water vapor. The total pressure
and temperature of air in the room are 100 kPa and 
respectively. Given
that the saturation pressure for water at
, the relative humidity
of the air in the room is
(A) 67%
(B) 55%
(C) 83%
(D) 71%
Answer: (D)
Explanation:
