Astream of humid air containing 2.50 mol% h2o(v) and the balance dry air is to be humidified to a water content of 10.0 mole% h20. for this purpose, liquid water is fed through a flowmeter and evaporated into the air stream. the flowmeter reading, r, is 105.0. 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 = 42.0 ft/h and v = 100.9 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= / 1 lb-mole/h estimate the flow rate of the liquid water feed if the reading ris a linear function of v . v= ib-mole/h