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Problem 7.1.7 in Himmelbau An oxygen cylinder used as a standby source of oxygen contains O2 at 70°F. To calibrate the gauge on the O2 cylinder, which has a volume of 1.01 ft³, the oxygen, initially at 70°F, is released into an evacuated tank of known volume (15.0 ft³). At equilibrium the gas pressure in the tank (and cylinder) was measured as 4 inch H20 gauge and the gas temperature in both cylinders was 75°F. A barometer in the vicinity read 29.99 inch Hg. What was the original gauge pressure of oxygen in the cylinder?

Problem 7.1.7 in Himmelbau An oxygen cylinder used as a standby source of oxygen contains O2 at 70°F. To calibrate the gauge on the O2 cylinder, which has a volume of 1.01 ft³, the oxygen, initially at 70°F, is released into an evacuated tank of known volume (15.0 ft³). At equilibrium the gas pressure in the tank (and cylinder) was measured as 4 inch H20 gauge and the gas temperature in both cylinders was 75°F. A barometer in the vicinity read 29.99 inch Hg. What was the original gauge pressure of oxygen in the cylinder?

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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I dont seem to get the correct answer of Pg = 1509kPa for question 1. Please can you assist me in how to approach this.

1.1 Problem 7.1.7 in Himmelbau An oxygen cylinder used as a standby source of oxygen contains O2 at 70°F. To calibrate the gauge on the O2 cylinder, which has a volume of 1.01 ft3, the oxygen, initially at 70°F, is released into an evacuated tank of known volume (15.0 ft8). At equilibrium the gas pressure in the tank (and cylinder) was measured as 4 inch H20 gauge and the gas temperature in both cylinders was 75°F. A barometer in the vicinity read 29.99 inch Hg. What was the original gauge pressure of oxygen in the cylinder?
Transcribed Image Text:1.1 Problem 7.1.7 in Himmelbau An oxygen cylinder used as a standby source of oxygen contains O2 at 70°F. To calibrate the gauge on the O2 cylinder, which has a volume of 1.01 ft3, the oxygen, initially at 70°F, is released into an evacuated tank of known volume (15.0 ft8). At equilibrium the gas pressure in the tank (and cylinder) was measured as 4 inch H20 gauge and the gas temperature in both cylinders was 75°F. A barometer in the vicinity read 29.99 inch Hg. What was the original gauge pressure of oxygen in the cylinder?
02@ T: 70°F = 194. 201 K V= 1. 01ft3= 0. O LS6m bryınd er V= 15.0 ft 3 = 0.42475 m² At equilibrium : 0-99536 KPq Pabs =4-38175kAo P 4 inch HLO Tin buth ylinders :197.039 K 3. 38 639 KPa = 75° F 19.99 inch Mg %3D Patmus A Pabs = Patm + Pg- Find original Pg_of Oz in iylinder . PV- nRT PV RT P, VI RTZ Pz Vz R T2 TI P2 V2 PIVI Pz VZ => 12 Vi.TZ 1294.261)(4 38175)(0.45 3 35) (6.0286) (197.0 39) 68.81 Kpa Pg = Pabs - Patmu 68.81 M 3.38639 65.42 pa
Transcribed Image Text:02@ T: 70°F = 194. 201 K V= 1. 01ft3= 0. O LS6m bryınd er V= 15.0 ft 3 = 0.42475 m² At equilibrium : 0-99536 KPq Pabs =4-38175kAo P 4 inch HLO Tin buth ylinders :197.039 K 3. 38 639 KPa = 75° F 19.99 inch Mg %3D Patmus A Pabs = Patm + Pg- Find original Pg_of Oz in iylinder . PV- nRT PV RT P, VI RTZ Pz Vz R T2 TI P2 V2 PIVI Pz VZ => 12 Vi.TZ 1294.261)(4 38175)(0.45 3 35) (6.0286) (197.0 39) 68.81 Kpa Pg = Pabs - Patmu 68.81 M 3.38639 65.42 pa
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