esc % - . ก ก € 墨 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 7E-17 -0.01 C Fo Question 3 A gas stream containing 4 per

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esc % - . ก ก € 墨 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 7E-17 -0.01 C Fo Question 3 A gas stream containing 4 percent ammonia (NH3) and 96 percent air is passed through a packed column to remove 98 percent of NH3 by absorption in pure water. The absorber will operate at 25 °C and 1 atm, and the gas and liquid rates are to be 713 lb/h-ft2 and 1,890 lb/h ft2, respectively. Mass-transfer coefficients are given below: 0 4d F7 0.005 0.01 ka = 60 mol/h ft³ unit mol fraction k a = 15 mol/h ft³ unit mol fraction . Find number of transfer unit, height of transfer unit, and column height, assuming isothermal operating and neglecting changes in gas and liquid flow rates. Additional Information Equilibrium data DII F8 0.015 0.02 XNH3 F9 0.025 0.03 A F10 24 F11 { [ ง ? 1 + = 11 I 400) 1 E F12 } a ล ] ค 2