If the relative humidity of a gas is 55% and the capacity is 18 mg/L, the absolute humidity is _____ mg H2O/L
a. 10 c. 22.5
b. 12 d. 25.2
ANS: A
RH = (content [AH)/capacity].
0.55 = x/18 mg H2O/L.
x = 10 mg H2O/L.
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