Ideal gas Problems 3-1 The molecular weight of carbon dioxide, CO2, is 44. In an experiment the value y for CO2 was found to be 1.3. Assuming that CO2 is a perfect gas, calculate the gas constant, R, and the specific heats at constant pressure and constant volume, Cp, Cv (0.189 kJ/kg.K; 0.63kJ/kg.K; 0.819kJ/kg.K) 3-2 Oxygen, O2, at 200 bar is to be stored in a steel vessel at 20°C the capacity of the vessel is 0.04m³. Assuming that O₂ is a perfect gas, calculate the mass of oxygen that can be stored in the vessel. The vessel is protected against excessive pressure by a fusible plug which will melt if the temperature rises too high. At what temperature must the plug melt to limit the pressure in the vessel to 240bar? The molecular weight of oxygen is 32 (10.5 kg; 78.6°C) 3-3 A quantity of a certain perfect gas is compressed from an initial state of 0.085m³, 1 bar to a final state of 0.034m³, 3.9 bar. The specific heats at constant volume are 0.724 kJ/kg.K, and the specific heats at constant pressure are 1.02kJ/kg.K. The observed temperature rise is 146K. Calculate the gas constant, R, the mass of gas present, and the increase of internal energy of the gas. (0.296kJ/kg.K; 0.11kg; 11.63kJ)

Ideal gas Problems 3-1 The molecular weight of carbon dioxide, CO2, is 44. In an experiment the value y for CO2 was found to be 1.3. Assuming that CO2 is a perfect gas, calculate the gas constant, R, and the specific heats at constant pressure and constant volume, Cp, Cv (0.189 kJ/kg.K; 0.63kJ/kg.K; 0.819kJ/kg.K) 3-2 Oxygen, O2, at 200 bar is to be stored in a steel vessel at 20°C the capacity of the vessel is 0.04m³. Assuming that O₂ is a perfect gas, calculate the mass of oxygen that can be stored in the vessel. The vessel is protected against excessive pressure by a fusible plug which will melt if the temperature rises too high. At what temperature must the plug melt to limit the pressure in the vessel to 240bar? The molecular weight of oxygen is 32 (10.5 kg; 78.6°C) 3-3 A quantity of a certain perfect gas is compressed from an initial state of 0.085m³, 1 bar to a final state of 0.034m³, 3.9 bar. The specific heats at constant volume are 0.724 kJ/kg.K, and the specific heats at constant pressure are 1.02kJ/kg.K. The observed temperature rise is 146K. Calculate the gas constant, R, the mass of gas present, and the increase of internal energy of the gas. (0.296kJ/kg.K; 0.11kg; 11.63kJ)

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter4: Temperature Effects On Atom Arrangements And Atom Motion

Section: Chapter Questions

Problem 4.14P

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