The air in a classroom is maintained at 20ºC and 50% humidity in Colorado where the atmospheric pressure is 80 kPa. Using the equations, the humidity ratio is found to be nearest:

A) 0.0168 kgv /kga
B) 0.0173 kgv /kga
C) 0.0182 kgv /kga
D) 0.0187 kgv /kga


D) 0.0187 kgv /kga

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