Air at 1 atm and 25 degree Celsius temperature, flows inside a 3 cm diameter tube with a velocity of 5.25 m/s. Determine mass transfer coefficient for iodine transfer from the air stream to the weak surface. Assume the following thermos-physical properties of airD =0.82 * 10 -6 m2/s

Air at 1 atm and 25 degree Celsius temperature, flows inside a 3 cm di

1.	Air at 1 atm and 25 degree Celsius temperature, flows inside a 3 cm diameter tube with a velocity of 5.25 m/s. Determine mass transfer coefficient for iodine transfer from the air stream to the weak surface. Assume the following thermos-physical properties of air D =0.82 * 10 -6 m²/s
A.	nv = 15.5 * 10 -6 m<sup>2</sup>/s
B.	0.0176 m/s
C.	1.0176 m/s
D.	2.0176 m/s
E.	3.0176 m/s
Answer» B. 0.0176 m/s