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. |
Homework Answers
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In an adiabatic free expansion
a.
no heat is transferred between a system and its
surroundings....
5. (15) A closed system undergoes a process where heat transfer is allowed along the system...
5. (15) A closed system undergoes a process where heat transfer is allowed along the system boundary at constant temperature. For each case below, determine whether the change in entropy of the system is positive, negative, zero, or indeterminate. Explain your answer. a. Internally reversible process with heat transfer from the system to the surroundings b. Internally reversible process with heat transfer to the system from the surroundings; Internally reversible and adiabatic process; c. d. Internal irreversibilities present with heat...
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...
(b) Consider an adiabatic, reversible expansion of 0 020 mol Ar (perfect gas), initially at 25...
(b) Consider an adiabatic, reversible expansion of 0 020 mol Ar (perfect gas), initially at 25 C, from 0 50 L to 1 00 L The molar heat capacity of argon is, Cvm 12 48 J K mol- Calculate the work (w) done and heat transferred (q) for this process HINT first calculate the final temperature under the adiabatic, reversible expansion process (8)
(b) Consider an adiabatic, reversible expansion of 0 020 mol Ar (perfect gas), initially at 25 C,...
Consider a reversible adiabatic expansion of 1.00 mol of an ideal gas, starting from 1.90 L...
Consider a reversible adiabatic expansion of 1.00 mol of an ideal gas, starting from 1.90 L and 415 K , if 2.0 kJ of work is done by the expansion. The molar heat capacity at constant volume of the gas is 2.5R. R = 8.314 JK−1mol−1. Determine the final temperature of the gas in the process. Determine the final volume of the gas in the process. Determine the final pressure of the gas in the process.
Please give detailed explanation for final part. Thanks. Reversible adiabatic expansion of ideal gas (This question...
Please give detailed explanation for final part. Thanks.
Reversible adiabatic expansion of ideal gas (This question involves working through the final section of lecture 3) Explain why the first Law for an reversible adiabatic process gives AU = -PdV, and why this equation doesn't hold for the Joule expansion. Assuming that for an ideal gas U = CVT, prove that the First Law leads to the statement that PVY is constant in a reversible adiabatic process. A container of Helium...
An adiabatic heat exchanger is one for which no heat is exchanged with the surroundings. All...
An adiabatic heat exchanger is one for which no heat is exchanged with the surroundings. All of the heat lost by the hot stream is transferred to the cold stream in this adiabatic process. In a proposed process, propane gas enters a continuous adiabatic heat exchanger at 45 °C and 265 kPa and exits at 255 °C. Superheated steam at 300 °C and 7.0 bar enters the exchanger flowing countercurrently to the propane and exits as a saturated liquid at...
Consider the expansion of 1.00 mole of (ideal) Ne from 2.00 atm at 75.00 C: the...
Consider the expansion of 1.00 mole of (ideal) Ne from 2.00 atm at 75.00 C: the volume is doubled in the process. Find q, w, Delta H and the final pressure and temperature for a) reversible adiabatic expansion b) reversible isothermal expansion c) reversible constant pressure expansion d) irreversible adiabat against 0.500 atm external pressure
QUESTION 7 When heat is not exchanged between a system and its surroundings (q = 0),...
QUESTION 7 When heat is not exchanged between a system and its surroundings (q = 0), which one of the following terms is used to describe the process? O A. adiabatic B. isothermal C. isochoric OD. isobaric E. endothermic QUESTION 8 A photon possesses an energy of 1.35 x 10-18 Joules of energy. What is the wavelength of this photo in nanometers (nm)? Remember: E= hv&vBot;and C = v, where c= 3.00 x 100 meters/second.
of surroundings and total when 050 mol 3. Calculate the change in the entropy the system,...
of surroundings and total when 050 mol 3. Calculate the change in the entropy the system, the , of N2 gas at 298K and 1.00 bar double its volume (a) in an isothermal reversible expansion (b) in an isothermal irreversible expansion against p O (o) in an adiabatic reversible expansion
Adiabatic Process An adiabatic process is defined to be one in which there is no heat...
Adiabatic Process An adiabatic process is defined to be one in which there is no heat transfer-that is, Q-0. Processes that are nearly adiabatic can be achieved by using very effective insulation. Don't use scientific notations in your answers. Case 1. A 0.4-mol monatomic ideal gas system undergoes an adiabatic expansion, which results in a temperature decrease of 30K (a) What is the change in internal energy? Include a proper sign. Keep 2 decimal places. (5 attempts remaining) (b) What...
5. (15) A closed system undergoes a process where heat transfer is allowed along the system boundary at constant temperature. For each case below, determine whether the change in entropy of the system is positive, negative, zero, or indeterminate. Explain your answer. a. Internally reversible process with heat transfer from the system to the surroundings b. Internally reversible process with heat transfer to the system from the surroundings; Internally reversible and adiabatic process; c. d. Internal irreversibilities present with heat...
(b) Consider an adiabatic, reversible expansion of 0 020 mol Ar (perfect gas), initially at 25 C, from 0 50 L to 1 00 L The molar heat capacity of argon is, Cvm 12 48 J K mol- Calculate the work (w) done and heat transferred (q) for this process HINT first calculate the final temperature under the adiabatic, reversible expansion process (8)
(b) Consider an adiabatic, reversible expansion of 0 020 mol Ar (perfect gas), initially at 25 C,...
Please give detailed explanation for final part. Thanks.
Reversible adiabatic expansion of ideal gas (This question involves working through the final section of lecture 3) Explain why the first Law for an reversible adiabatic process gives AU = -PdV, and why this equation doesn't hold for the Joule expansion. Assuming that for an ideal gas U = CVT, prove that the First Law leads to the statement that PVY is constant in a reversible adiabatic process. A container of Helium...
Consider the expansion of 1.00 mole of (ideal) Ne from 2.00 atm at 75.00 C: the volume is doubled in the process. Find q, w, Delta H and the final pressure and temperature for a) reversible adiabatic expansion b) reversible isothermal expansion c) reversible constant pressure expansion d) irreversible adiabat against 0.500 atm external pressure
QUESTION 7 When heat is not exchanged between a system and its surroundings (q = 0), which one of the following terms is used to describe the process? O A. adiabatic B. isothermal C. isochoric OD. isobaric E. endothermic QUESTION 8 A photon possesses an energy of 1.35 x 10-18 Joules of energy. What is the wavelength of this photo in nanometers (nm)? Remember: E= hv&vBot;and C = v, where c= 3.00 x 100 meters/second.
of surroundings and total when 050 mol 3. Calculate the change in the entropy the system, the , of N2 gas at 298K and 1.00 bar double its volume (a) in an isothermal reversible expansion (b) in an isothermal irreversible expansion against p O (o) in an adiabatic reversible expansion
Adiabatic Process An adiabatic process is defined to be one in which there is no heat transfer-that is, Q-0. Processes that are nearly adiabatic can be achieved by using very effective insulation. Don't use scientific notations in your answers. Case 1. A 0.4-mol monatomic ideal gas system undergoes an adiabatic expansion, which results in a temperature decrease of 30K (a) What is the change in internal energy? Include a proper sign. Keep 2 decimal places. (5 attempts remaining) (b) What...
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