A stream of humid air containing 2.50 mol% H2O(v) and the balance dry air is to be humidified to a water content of 9.00 mole% H2O. For this purpose, liquid water is fed through a flowmeter and evaporated into the air stream. The flowmeter reading, R, is 95.0. The only available calibration data for the flowmeter are two points scribbled on a sheet of paper, indicating that readings R = 21.0 and R = 54.0 correspond to flow rates V = 44.0 ft /h and V = 98.9 ft/h, respectively. Water Flow Estimate the flow rate of the liquid water feed if the volumetric flow rate is a linear function of R. V= i ! ft3/h - i Ib-mole/h . Estimate the flow rate of the liquid water feed if the reading Ris a linear function of V ft3/h- i Ib-mole/h