Question

A room is filled with saturated moist air at 25°C and a total pressure of 100 kPa. If the mass of dry air in the room is 100 kg, the mass of water vapor is:_______ a. 0.52 kg b. 1.97 kg c. 2.96 kg d. 2.04 kg e. 3.17 kg

          A room is filled with saturated moist air at 25°C and a total pressure of 100 kPa. If the mass of dry air in the room is 100 kg, the mass of water vapor is:_______ 
a. 0.52 kg 
b. 1.97 kg 
c. 2.96 kg 
d. 2.04 kg 
e. 3.17 kg
        

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University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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A room is filled with saturated moist air at 25°C and a total pressure of 100 kPa. If the mass of dry air in the room is 100 kg, the mass of water vapor is:_______ a. 0.52 kg b. 1.97 kg c. 2.96 kg d. 2.04 kg e. 3.17 kg
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Transcript

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00:01 Hello guys in this problem we have our saturated air at the temperature of 25 degrees celsius it is given that the total pressure is of 100 kilo pascals in case of saturated air the partial vapor pressure is of 3 .17 kilo pascals and from this we can find out the humidity the humidity of the air equals 0 .622 times the vapor pressure over the total pressure minus the vapor pressure.
00:43 If we substitute the values, then it is 0 .62 times 3 .17 over 100 minus 3 .17...
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