Question 1 Both energy and entropy can be transferred between a system and surroundings by heat,...
Question 1
Both energy and entropy can be transferred between a system and surroundings by heat, work and mass flow.
-
True
False
QUESTION 2
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The amount of entropy generation during a process represents the irreversibilities and is process path dependent.
True
False
Homework Answers
1.
False
Energy can be transferred by heat or work between system and surrounding.
But entropy is transferred by heat only. Work transfer may or may not transfer entropy between system and surrounding.
2.
True
Amount of entropy generation is directly related to irreversibilities in the system.
Entropy is point function (it is property of system which depends only on intial and final point of system.
While entropy generation is Path function and depends on path of process.
Add Answer to:
Question 1
Both energy and entropy can be transferred between a system and
surroundings by heat,...
Both energy and entropy can be transferred between a system and surroundings by heat, work and...
Both energy and entropy can be transferred between a system and surroundings by heat, work and mass flow. True or False
Provide an explanation as well for the following questions. 1 Both energy and entropy can be...
Provide an explanation as well for the following questions. 1 Both energy and entropy can be transferred between a system and surroundings by heat, work, and mass flow True or False 2. An actual turbine undergoes an adiabatic process generating entropy due to irreversibilities. The generated entropy a) causes the turbine’s exit temperature to be lower than if the turbine were reversible. b) causes the turbine’s exit temperature to be higher than if the turbine were reversible. c) causes the...
3. The amount of entropy generation during a process represents the irreversibilities and is process path-dependent....
3. The amount of entropy generation during a process represents the irreversibilities and is process path-dependent. True or False
True or False (Problems 1 through 10) 1. The change in entropy of a closed system...
True or False (Problems 1 through 10) 1. The change in entropy of a closed system is the same for every process between two specified states 2. The entropy of a fixed amount of an incompressible substance increases in every process for which temperature increases 3. A process that violates the second law of thermodynamics violates the first law of thermodynamics. 4. When a net amount of work is done on a closed system undergoing an internally reversible process, a...
Heat, q, is energy transferred between a system and its surroundings. For a process that involves...
Heat, q, is energy transferred between a system and its surroundings. For a process that involves a temperature change q=m⋅Cs⋅ΔT where Cs is specific heat and m is mass. Heat can also be transferred at a constant temperature when there is a change in state. For a process that involves a phase change q=n⋅ΔH where, n is the number of moles and ΔH is the enthalpy of fusion, vaporization, or sublimation. The following table provides the specific heat and enthalpy...
Provide an explanation for upvote thank you 2. An actual turbine undergoes an adiabatic process generating...
Provide an explanation for upvote thank you 2. An actual turbine undergoes an adiabatic process generating entropy due to irreversibilities. The generated entropy a) causes the turbine’s exit temperature to be lower than if the turbine were reversible. b) causes the turbine’s exit temperature to be higher than if the turbine were reversible. c) causes the turbine’s exit pressure to be lower than if the turbine were reversible. d) causes the turbine’s exit pressure to be higher than if the...
In an adiabatic free expansion a. no heat is transferred between a system and its surroundings....
In an adiabatic free expansion a. no heat is transferred between a system and its surroundings. b. the pressure remains constant. c. the volume remains constant. d. the process is reversible. e. the temperature remains constant.
Please explain Heat Transfer and Changes in the Entropy of the Surroundings. Below are key questions....
Please explain Heat Transfer and Changes in the Entropy of the Surroundings. Below are key questions. 1. Know and understand that the entropy change for the universe is defined in terms of the entropy change for the system and the entropy change for the surroundings. 2 .Know that a process in which the system’s entropy decreases can still be spontaneous depending on the degree to which the surroundings’ entropy changes. 3. Know and understand that an exothermic process increases the...
Indicate whether each statement is true or false. (a) The entropy of the universe increases for...
Indicate whether each statement is true or false. (a) The entropy of the universe increases for any spontaneous process. (b) The entropy change of the system is equal and opposite that of the surroundings for any irreversible process. (c) The entropy of the system must increase in any spontaneous process. (d) The entropy change for an isothermal process depends on both the absolute temperature and the amount of heat reversibly transferred.
A system is heated (75 kJ of heat is transferred from the surroundings) and expands (100...
A system is heated (75 kJ of heat is transferred from the surroundings) and expands (100 kJ of work is done). What is the change in internal energy of the system?
True or False (Problems 1 through 10) 1. The change in entropy of a closed system is the same for every process between two specified states 2. The entropy of a fixed amount of an incompressible substance increases in every process for which temperature increases 3. A process that violates the second law of thermodynamics violates the first law of thermodynamics. 4. When a net amount of work is done on a closed system undergoing an internally reversible process, a...
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