1. An adsorption unit packed with AmbersorbTM XE-347 is used to remove vinyl chloride (molar mass of 62.5) from an air stream at 26℃ and 1 atm. The mass flow rate of air is 1.9 kg/s and the inlet vinyl chloride concentration is 1000 ppm. He adsorption bed has an area of 5.0 m2 and is 0.35 m thick. Determine the time of breakthrough in hours based upon the following data: α=4.16,β=2.95,Κ=30s-1,and the apparent density of XE-347 is 700 kg/m3.