A sample of an ideal gas is taken through the cyclic process presented below. The associated pressure values are P, =7 kPa and P ас = 3.5 kPa. (R=8.314 J mol1.K-1) (a) Find the net work done through the entire сycle. (b) If T,= 204 K and the gas is monatomic, how many moles of the gas are in the sample? n = moles (c) What is the total change in the internal energy of the whole cycle? J (d) Use the first law of thermodynamics to calculate the amount of heat energy transfered through the process ab. J (e) What is the efficiency of the concerned engine? Express your answer in terms of percentage. e = % Pac a 1.0 3.0 Volume (m³) Pressure (kPa)

A sample of an ideal gas is taken through the cyclic process presented below. The associated pressure values are P, =7 kPa and P ас = 3.5 kPa. (R=8.314 J mol1.K-1) (a) Find the net work done through the entire сycle. (b) If T,= 204 K and the gas is monatomic, how many moles of the gas are in the sample? n = moles (c) What is the total change in the internal energy of the whole cycle? J (d) Use the first law of thermodynamics to calculate the amount of heat energy transfered through the process ab. J (e) What is the efficiency of the concerned engine? Express your answer in terms of percentage. e = % Pac a 1.0 3.0 Volume (m³) Pressure (kPa)

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter3: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 93CP: An insulated vessel contains 1.5 moles of argon at 2 atm. The gas initially occupies a volume of 5...

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