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In the following take Cy = 5 and Cp = 7(Btu)(lb mole)F)- for nitrogen gas: %3D 3 AVse (a) Three pound moles of nitrogen at 70( F), contained in a rigid vessel, is heated to 350( F). How much heat is required if the vessel has a negligible heat capacity? If it weighs 200(lbm) and has a heat capacity of 0.12(Btu)(lbm)(F)-, how much heat is required? b) Four pound moles of nitrogen at 400(°F) is contained in a piston/cylinder arrange- ment. How much heat must be extracted from this system, which is kept at con- stant pressure, to cool it to 150(CF) if the heat capacity of the piston and cylinder is neglected?

In the following take Cy = 5 and Cp = 7(Btu)(lb mole)F)- for nitrogen gas: %3D 3 AVse (a) Three pound moles of nitrogen at 70( F), contained in a rigid vessel, is heated to 350( F). How much heat is required if the vessel has a negligible heat capacity? If it weighs 200(lbm) and has a heat capacity of 0.12(Btu)(lbm)(F)-, how much heat is required? b) Four pound moles of nitrogen at 400(°F) is contained in a piston/cylinder arrange- ment. How much heat must be extracted from this system, which is kept at con- stant pressure, to cool it to 150(CF) if the heat capacity of the piston and cylinder is neglected?

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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In the following take Cy = 5 and Cp 7(Btu)(lb mole)(F) for nitrogen gas: 3 AVs0 (a) Three pound moles of nitrogen at 70(°F), contained in a rigid vessel, is heated to 350( F). How much heat is required if the vessel has a negligible heat capacity? If it weighs 200(lbm) and has a heat capacity of 0.12(Btu)(lbm)(F)-1, how much heat is required? (b) Four pound moles of nitrogen at 400( F) is contained in a piston/cylinder arrange- ment. How much heat must be extracted from this system, which is kept at con- stant pressure, to cool it to 150(CF) if the heat capacity of the piston and cylinder is neglected?
Transcribed Image Text:In the following take Cy = 5 and Cp 7(Btu)(lb mole)(F) for nitrogen gas: 3 AVs0 (a) Three pound moles of nitrogen at 70(°F), contained in a rigid vessel, is heated to 350( F). How much heat is required if the vessel has a negligible heat capacity? If it weighs 200(lbm) and has a heat capacity of 0.12(Btu)(lbm)(F)-1, how much heat is required? (b) Four pound moles of nitrogen at 400( F) is contained in a piston/cylinder arrange- ment. How much heat must be extracted from this system, which is kept at con- stant pressure, to cool it to 150(CF) if the heat capacity of the piston and cylinder is neglected?
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