A large tank filled with a mixture of gases a and b at 1 atm and 32°F is connected to a large tank filled with a different mixture of a and b at 1 atm and 32°F. The connection between the tanks is a tube 2-in inside diameter and 6-in long. Calculate the steady state rate of transport of gas a through the tube (in lbmol/hr), when the concentration of a in one tank is 90 mol percent and the concentration of an in the other tank is 5 mole percent. Assume that the gas to each tank is uniform in composition and that transfer between the tank is by molecular diffusion. A. 1.71 E -1 B. 1.71 E-2 C. 1.71 E-3 D.1.71E-4

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Chapter1: Introduction
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A large tank filled with a mixture of gases a and b at 1 atm and 32°F is connected to a large tank filled
with a different mixture of a and b at 1 atm and 32°F. The connection between the tanks is a tube 2-in
inside diameter and 6-in long. Calculate the steady state rate of transport of gas a through the tube (in
lbmol/hr), when the concentration of a in one tank is 90 mol percent and the concentration of an in the
other tank is 5 mole percent. Assume that the gas to each tank is uniform in composition and that
transfer between the tank is by molecular diffusion.
A. 1.71 E -1       B. 1.71 E-2       C. 1.71 E-3       D.1.71E-4 

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