A room contains 35 kg of dry air and 0.5 kg of water vapor. The total pressure

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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 25°C respectively. Given that the saturation pressure for water at
25°C is 3.17 kPa, the relative humidity of the air in the room is

Options:

A . 67%

B . 55%

C . 83%

D . 71%

Answer: Option D

-NA-

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