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1- A 2.50 mole sample of an ideal gas, for which, is subjected to two successive changes in state: (1) From 25.0°C and, the gas is expanded isothermally against a constant pressure of totwice the initial volume. (2) At the end of the previous process, the gas is cooled at constant volume from 25.0°C to -29.0°C. Calculate q, w, AU, AH and for each of the stages. Also calculate q, w, AU, AH, for the complete process

1- A 2.50 mole sample of an ideal gas, for which, is subjected to two successive changes in state: (1) From 25.0°C and, the gas is expanded isothermally against a constant pressure of totwice the initial volume. (2) At the end of the previous process, the gas is cooled at constant volume from 25.0°C to -29.0°C. Calculate q, w, AU, AH and for each of the stages. Also calculate q, w, AU, AH, for the complete process

Introduction to Chemical Engineering Thermodynamics
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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1- A 2.50 mole sample of an ideal gas, for which, is subjected to two successive changes in state: (1) From 25.0°C and, the gas is expanded isothermally against a constant pressure of totwice the initial volume. (2) At the end of the previous process, the gas is cooled at constant volume from 25.0°C to -29.0°C. Calculate q, w, AU, AH and for each of the stages. Also calculate q, w, AU, AH, for the complete process Consider a piston-cylinder device with a piston surface area of 0.1 m² initially filled with 0.05 m³ of saturated water vapor at the atmospheric pressure of 100 kPa. Now cold water is poured outside the cylinder, and the steam inside starts condensing as a result of heat transfer to the cooling water outside. If the piston is stuck at its initial position, determine the friction force acting on the piston and the amount of heat transfer when the temperature inside the cylinder drops to 30°C. Cold water BE 0.05 m 100 kPa Steam F
Transcribed Image Text:1- A 2.50 mole sample of an ideal gas, for which, is subjected to two successive changes in state: (1) From 25.0°C and, the gas is expanded isothermally against a constant pressure of totwice the initial volume. (2) At the end of the previous process, the gas is cooled at constant volume from 25.0°C to -29.0°C. Calculate q, w, AU, AH and for each of the stages. Also calculate q, w, AU, AH, for the complete process Consider a piston-cylinder device with a piston surface area of 0.1 m² initially filled with 0.05 m³ of saturated water vapor at the atmospheric pressure of 100 kPa. Now cold water is poured outside the cylinder, and the steam inside starts condensing as a result of heat transfer to the cooling water outside. If the piston is stuck at its initial position, determine the friction force acting on the piston and the amount of heat transfer when the temperature inside the cylinder drops to 30°C. Cold water BE 0.05 m 100 kPa Steam F
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