A gas containing 80% CH, and 20% He is sent through a quartz diffusion tube (see Figure P8.8) to recover the helium. Twenty percent by weight of the original gas is recovered, and its composition is 50% He. Calculate the composition of the waste gas if 100 kg moles of gas are processed per minute. 80% CH. 20% He Waste gas 50% He recovered gas Figure P8.8

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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Please solve the following problems with block figures and streams. Thank you.

V*8.8 A gas containing 80% CH, and 20% He is sent through a quartz diffusion tube (see
Figure P8.8) to recover the helium. Twenty percent by weight of the original gas is
recovered, and its composition is 50% He. Calculate the composition of the waste gas
if 100 kg moles of gas are processed per minute.
80% CH.
Waste gas
20% He
50% He
recovered gas
Figure P8.8
Transcribed Image Text:V*8.8 A gas containing 80% CH, and 20% He is sent through a quartz diffusion tube (see Figure P8.8) to recover the helium. Twenty percent by weight of the original gas is recovered, and its composition is 50% He. Calculate the composition of the waste gas if 100 kg moles of gas are processed per minute. 80% CH. Waste gas 20% He 50% He recovered gas Figure P8.8
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