3. Gaseous helium is in storage tank with a volume of 50 liters and a temperature of 25°C. The pressure is 20 atm. Assume that helium is an ideal gas. a) What is the number of moles of He present in the tank? b) When the valve is opened and the gas is isothermally and reversibly expanded to 1 atmosphere, find the work done by the gas.

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
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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3. Gaseous helium is in storage tank with a volume of 50 liters and a temperature of 25°C. The pressure
is 20 atm. Assume that helium is an ideal gas.
a) What is the number of moles of He present in the tank?
b) When the valve is opened and the gas is isothermally and reversibly expanded to 1
atmosphere,
find the work done by the gas.
Transcribed Image Text:(25 minutes) 3. Gaseous helium is in storage tank with a volume of 50 liters and a temperature of 25°C. The pressure is 20 atm. Assume that helium is an ideal gas. a) What is the number of moles of He present in the tank? b) When the valve is opened and the gas is isothermally and reversibly expanded to 1 atmosphere, find the work done by the gas.
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