Both energy and entropy can be transferred between a system and surroundings by heat, work and mass flow.
True or False
Both energy and entropy can be transferred between a system and surroundings by heat, work and...
Question 1 Both energy and entropy can be transferred between a system and surroundings by heat, work and mass flow. True False QUESTION 2 The amount of entropy generation during a process represents the irreversibilities and is process path dependent. True False
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...
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...
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?
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. 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 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.
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...
A system absorbs 196 kJ of heat and the surroundings do 117 kJ of work on the system. Calculate the change in internal energy of the system.
A system releases 661 kJ of heat and does 100 kJ of work on the surroundings. What is the change in internal energy of the system?