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In the figure below, the change in internal energy of a gas that is taken from A to C along the blue path is +805 J. The work done on the gas along the red path ABC is -565 J. (a) How much energy must be added to the system by heat as it goes from A through B to C? 565 Your response differs from the correct answer by more than 10%. Double check your calculations. J (b) If the pressure at point A is five times that of point C, what is the work done on the system in going from C to D? (c) What is the energy exchanged with the surroundings by heat as the gas goes from C to A along the green path? -565 Your response differs from the correct answer by more than 10%. Double check your calculations. J (d) If the change in internal energy in going from point D to point A is +570 J, how much energy must be added to the system by heat as it goes from point C to point D?

In the figure below, the change in internal energy of a gas that is taken from A to C along the blue path is +805 J. The work done on the gas along the red path ABC is -565 J. (a) How much energy must be added to the system by heat as it goes from A through B to C? 565 Your response differs from the correct answer by more than 10%. Double check your calculations. J (b) If the pressure at point A is five times that of point C, what is the work done on the system in going from C to D? (c) What is the energy exchanged with the surroundings by heat as the gas goes from C to A along the green path? -565 Your response differs from the correct answer by more than 10%. Double check your calculations. J (d) If the change in internal energy in going from point D to point A is +570 J, how much energy must be added to the system by heat as it goes from point C to point D?

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.104PAE: 9.104 An engineer is using sodium metal as a cooling agent in a design because it has useful thermal...
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In the figure below, the change in internal energy of a gas that is taken from A to C along the blue path is +805 J. The work done on the gas along the red path ABC is -565 J. P A B D C V (a) How much energy must be added to the system by heat as it goes from A through B to C? 565 Your response differs from the correct answer by more than 10%. Double check your calculations. J (b) If the pressure at point A is five times that of point C, what is the work done on the system in going from C to D? (c) What is the energy exchanged with the surroundings by heat as the gas goes from C to A along the green path? -565 Your response differs from the correct answer by more than 10%. Double check your calculations. J (d) If the change in internal energy in going from point D to point A is +570 J, how much energy must be added to the system by heat as it goes from point C to point D?
Transcribed Image Text:In the figure below, the change in internal energy of a gas that is taken from A to C along the blue path is +805 J. The work done on the gas along the red path ABC is -565 J. P A B D C V (a) How much energy must be added to the system by heat as it goes from A through B to C? 565 Your response differs from the correct answer by more than 10%. Double check your calculations. J (b) If the pressure at point A is five times that of point C, what is the work done on the system in going from C to D? (c) What is the energy exchanged with the surroundings by heat as the gas goes from C to A along the green path? -565 Your response differs from the correct answer by more than 10%. Double check your calculations. J (d) If the change in internal energy in going from point D to point A is +570 J, how much energy must be added to the system by heat as it goes from point C to point D?
Expert Solution
Step 1

(a)

According to the first law of thermodynamics, the energy must be added to the system by heat as it goes from A through B to C.

The heat is calculated as follows:

 QABC=UABC-WABC=805--565 J=1370 J

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