Argon gas in an insulated plasma deposition chamber with a volume of 2 L is to be heated by an electric resistance heater. Initially the gas, which can be treated as an ideal gas, is at 1.5 Pa and 300 K. The 1000-ohm heater draws current at 40 V for 5 minutes (480 J of work is done by the surrounding). What is the final gas temperature and pressure at equilibrium? The mass of the heater is 12 g and its heat capacity is 0.35 J/gK. Assume that the heat transfer to the chamber from the gas at this low pressure and in the short time period is negligible.
Argon gas in an insulated plasma deposition chamber with a volume of 2 L is to be heated by an electric resistance heater. Initially the gas, which can be treated as an ideal gas, is at 1.5 Pa and 300 K. The 1000-ohm heater draws current at 40 V for 5 minutes (480 J of work is done by the surrounding). What is the final gas temperature and pressure at equilibrium? The mass of the heater is 12 g and its heat capacity is 0.35 J/gK. Assume that the heat transfer to the chamber from the gas at this low pressure and in the short time period is negligible.
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
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:Example 3.10
Argon gas in an insulated plasma deposition
chamber with a volume of 2 L is to be heated by
an electric resistance heater. Initially the gas,
which can be treated as an ideal gas, is at 1.5 Pa
and 300 K. The 1000-ohm heater draws current
at 40 V for 5 minutes (480 J of work is done by
the surrounding). What is the final gas
temperature and pressure at equilibrium? The
mass of the heater is 12 g and its heat capacity is
0.35 J/gK. Assume that the heat transfer to the
chamber from the gas at this low pressure and in
the short time period is negligible.
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