For an ideal gas, ∆
= 
∆T, and
= (3/2)R. A good first step is to calculate the temperature at
each of the for states numbered 1-4. Summarize the results in a
table and answer this question:
a. Of the following quantities, which are zero for a cyclic process: U, w, q?
Homework Answers
A quantity of a monatomic ideal gas undergoes a process in which both its pressure and...
A quantity of a monatomic ideal gas undergoes a process in which
both its pressure and volume are doubled as shown in the figure
above.
DATA:
V0 = 0.23 m3
P0 = 14500 Pa.
What is the change of the internal energy of the gas?
Tries 0/20
What was the work done by the gas during the expansion?
Tries 0/20
What amount of heat flowed into the gas during the expansion?
Tries 0/20
Post
Discussion
We were unable to transcribe...
Example An ideal gas undergoes the cyclic process abca (see Fig). During the transitions a →...
Example An ideal gas undergoes the cyclic process abca (see Fig). During the transitions a → b → c it absorbs a net heat of 4.5 k.J. The thermal energy at point a is 600 .J The nature of the transtonc a is unknown. 3o E We were unable to transcribe this image
(3). A sample of 1.00 mol ideal gas molecules with Com= 7/2 R is initially at...
(3). A sample of 1.00 mol ideal gas molecules with Com= 7/2 R is initially at p = 1.00 bar and V = 22.44 L and then put thought the following cycle in reversible processes: (a) constant-pressure expansion to twice its initial volume, (b) constant volume cooling to its initial temperature, (c) isothermal-compression back to 1.00 bar. Calculate q, w, AU, AH, AS for each process and for the whole cycle. (20 pts)
A 1.00 mole sample of an ideal monatomic gas, originally at a pressure of 1.00 atm,...
A 1.00 mole sample of an ideal monatomic gas, originally at a pressure of 1.00 atm, undergoes, undergoes a three-step process. (1) It is expanded adiabatically from T1 = 550 K, to T2 = 389 K; (2) it is compressed at constant pressure until the temperature reaches T3; (3) it then returns to its original temperature and pressure by a constant volume process. (a) Plot these processes on a PV diagram. (b) Determine T3. (c) Calculate the change in internal energy, the...
The Standard enthalpy of vaporization of water at 100.0 oC is 40.66 KJ*mol-1. The Cp,m values for the liquid and the vap...
The Standard enthalpy of vaporization of water at 100.0
oC is 40.66 KJ*mol-1. The Cp,m
values for the liquid and the vapor water are, respectively, 75.3
and 33.58 J*K-1*mol-1. Assume that the heat
capacities are independent of temperature, and that the vapor
behaves as an ideal gas.
a) Calculate
sys in taking one mole of liquid water at 25.0
oC and 1.00 atm to gaseous water at 95.0 oC
and 0.500 atm.
b) Assume that the temperature and pressure of...
Constant amount of ideal gas is kept inside a cylinder by a piston. Then the gas...
Constant amount of ideal gas is kept inside a cylinder by a
piston. Then the gas expands adiabatically.
Compare the initial (i) and the final (f) physical quantities of
the gas to each other.
equal to less than greater than The volume Vf
is ... Vi.
equal to less than greater than The entropy
Sf is ... Si.
equal to less than greater than The internal energy
Uf is ... Ui.
equal to less than greater than The pressure
pf is ... pi.
equal...
A sample of 1.00 mol ideal gas molecules with Cpm 7/2 R is initially at p 1.00 bar and V 22.44 L and then put tho...
A sample of 1.00 mol ideal gas molecules with Cpm 7/2 R is initially at p 1.00 bar and V 22.44 L and then put thought the following cycle in reversible processes: (a) constant-pressure expansion to twice its initial volume, (b) constant-volume cooling to its initial temperature, (c) isothermal-compression back to 1.00 bar. Calculate q, w, AU, AH, AS for each process and for the whole cycle. (20 pts)
7.5) A 1.15 -mol quantity of monatomic ideal gas undergoes the following cyclic process. The gas...
7.5) A 1.15 -mol quantity of monatomic ideal gas undergoes the
following cyclic process. The gas starts at point a at STP. It
expands isothermally to point b, where the volume is 2.2 times its
original volume. Next, heat is removed while keeping the volume
constant and reducing the pressure. Finally, the gas undergoes
adiabatic compression, returning to point a.
a. Calculate the pressures at b and c. (answers in Pa)
**Find the volumes at a and b first.
**Use...
(3). A sample of 1.00 mol ideal gas molecules with Cp, m = 7/2 R is...
(3). A sample of 1.00 mol ideal gas molecules with Cp, m = 7/2 R is initially at p = 1.00 bar and V = 22.44 L and then put thought the following cycle in reversible processes: (a) constant-pressure expansion to twice its initial volume, (b) constant-volume cooling to its initial temperature, (c) isothermal-compression back to 1.00 bar. Calculate q, w, ΔU, ΔH, ΔS for each process and for the whole cycle. (20 pts)
Please help and show work. Thanks! (3). A sample of 1.00 mol ideal gas molecules with...
Please help and show work. Thanks!
(3). A sample of 1.00 mol ideal gas molecules with Cp, m = 7/2 R is initially at p = 1.00 bar and V = 22.44 L and then put thought the following cycle in reversible processes: (a) constant-pressure expansion to twice its initial volume, (b) constant-volume cooling to its initial temperature, (c) isothermal-compression back to 1.00 bar. Calculate q, w, AU, AH, AS for each process and for the whole cycle. (20 pts)
A quantity of a monatomic ideal gas undergoes a process in which
both its pressure and volume are doubled as shown in the figure
above.
DATA:
V0 = 0.23 m3
P0 = 14500 Pa.
What is the change of the internal energy of the gas?
Tries 0/20
What was the work done by the gas during the expansion?
Tries 0/20
What amount of heat flowed into the gas during the expansion?
Tries 0/20
Post
Discussion
We were unable to transcribe...
Example An ideal gas undergoes the cyclic process abca (see Fig). During the transitions a → b → c it absorbs a net heat of 4.5 k.J. The thermal energy at point a is 600 .J The nature of the transtonc a is unknown. 3o E We were unable to transcribe this image
(3). A sample of 1.00 mol ideal gas molecules with Com= 7/2 R is initially at p = 1.00 bar and V = 22.44 L and then put thought the following cycle in reversible processes: (a) constant-pressure expansion to twice its initial volume, (b) constant volume cooling to its initial temperature, (c) isothermal-compression back to 1.00 bar. Calculate q, w, AU, AH, AS for each process and for the whole cycle. (20 pts)
The Standard enthalpy of vaporization of water at 100.0
oC is 40.66 KJ*mol-1. The Cp,m
values for the liquid and the vapor water are, respectively, 75.3
and 33.58 J*K-1*mol-1. Assume that the heat
capacities are independent of temperature, and that the vapor
behaves as an ideal gas.
a) Calculate
sys in taking one mole of liquid water at 25.0
oC and 1.00 atm to gaseous water at 95.0 oC
and 0.500 atm.
b) Assume that the temperature and pressure of...
Constant amount of ideal gas is kept inside a cylinder by a
piston. Then the gas expands adiabatically.
Compare the initial (i) and the final (f) physical quantities of
the gas to each other.
equal to less than greater than The volume Vf
is ... Vi.
equal to less than greater than The entropy
Sf is ... Si.
equal to less than greater than The internal energy
Uf is ... Ui.
equal to less than greater than The pressure
pf is ... pi.
equal...
A sample of 1.00 mol ideal gas molecules with Cpm 7/2 R is initially at p 1.00 bar and V 22.44 L and then put thought the following cycle in reversible processes: (a) constant-pressure expansion to twice its initial volume, (b) constant-volume cooling to its initial temperature, (c) isothermal-compression back to 1.00 bar. Calculate q, w, AU, AH, AS for each process and for the whole cycle. (20 pts)
Please help and show work. Thanks!
(3). A sample of 1.00 mol ideal gas molecules with Cp, m = 7/2 R is initially at p = 1.00 bar and V = 22.44 L and then put thought the following cycle in reversible processes: (a) constant-pressure expansion to twice its initial volume, (b) constant-volume cooling to its initial temperature, (c) isothermal-compression back to 1.00 bar. Calculate q, w, AU, AH, AS for each process and for the whole cycle. (20 pts)
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