Question

2.)1.0 mol sample of an ideal monatomic gas originally at a pressure of 1 atm undergoes a 3-step process as follows:

(i) It expands adiabatically from T1 = 588 K to T2 = 389 K

(ii) It is compressed at constant pressure until its temperature reaches T3 K

(iii) It then returns to its original pressure and temperature by a constant volume process.

A). Plot these processes on a PV diagram

B). Determine the temperature T3

C). Calculate the change in internal energy, work done by the gas and heat added to the gas for each of these three processes

D). Calculate the change in internal energy, work d0ne by the gas and heat added to the gas for the complete cycle.

Answer #1

A mole of a monatomic ideal gas is taken from an initial
pressure p and volume V to a final pressure 3p and volume 3V by two
different processes: (I) It expands isothermally until its volume
is tripled, and then its pressure is increased at constant volume
to the final pressure. (II) It is compressed isothermally until its
pressure is tripled, and then its volume is increased at constant
pressure to the final volume. Show the path of each process...

17) Three moles of an ideal monatomic gas expand at a constant
pressure of 2.70 atm ; the volume of the gas changes from 3.10×10−2
m3 to 4.60×10−2 m3 .
Part A
Calculate the initial temperature of the gas.
Part B
Calculate the final temperature of the gas.
Part C
Calculate the amount of work the gas does in expanding.
Part D
Calculate the amount of heat added to the gas.
Part E
Calculate the change in internal energy of...

Under constant pressure, the temperature of 1.70 mol of an ideal
monatomic gas is raised 15.5 K. (a) What is the work W done by the
gas? J (b) What is the energy transferred as heat Q? J (c) What is
the change ΔEint in the internal energy of the gas? J (d) What is
the change ΔK in the average kinetic energy per atom? J

Three moles of an ideal monatomic gas expand at a constant
pressure of 2.90atm : the volume of the gas changes from
3.30*10^-2m^3 to 4.50*10^-2m^3.
Part A, Calculate the initial temperature of the gas.
Part B, Calculate the final temperature of the gas.
Part C, Calculate the amount of work the gas does in
expanding.
Part D, Calculate the amount of heat added to the gas.
Part E, Calculate the change in internal energy of the gas.

1. An ideal monatomic gas, with 24.05 moles, expands
adiabatically from 0.500m^3 to 1.75 m^3. IF the initial pressure
and temperature are 1.40x10^5 Pa and 350K, respectively, find the
change in internal energy of the gas if the final temperature of
the gas is 152K.
2. A fridge does 17.5 KJ of work while moving 120KJ of thermal
energy from inside the fridge. Calculate the fridge's coefficient
of performance.

3. An ideal monatomic gas expands isothermally from .500 m3 to
1.25 m3 at a constant temperature of 675 K. If the initial pressure
is 1.00 ∙ 105 Pa, find (a) the work done by the gas, (b) the
thermal energy transfer Q, and (c) the change in the internal
energy.

An ideal monatomic gas expands isothermally from 0.600 m3 to
1.25 m3 at a constant temperature of 730 K. If the initial pressure
is 1.02 ? 105 Pa find the following.
(a) the work done on the gas
J
(b) the thermal energy transfer Q
J
(c) the change in the internal energy
J

A closed piston-cylinder system contains a 120
moles of neon, a monatomic ideal gas, at pressure
PA = 2.5 atm
and volume VA = 0.80
m3. It undergoes the following cyclic
process:
A -> B: I
There is isothermal expansion to volume double of the original.
B -> C:
Constant-volume process back to its original pressure .
C -> A:
Constant-pressure process back to its initial state
a) Draw a Pressure volume diagram for the cycle. You
don't need to...

In this problem, 0.90 mole of a monatomic ideal gas is initially
at 285 K and 1 atm.
(a) What is its initial internal energy?
_____ kJ
(b) Find its final internal energy and the work done by the gas
when 420 J of heat are added at constant pressure.
final internal energy ________kJ
work done by the gas _______kJ
(c) Find the same quantities when 420 J of heat are added at
constant volume.
finale internal energy ________kJ
work...

4. Three moles of a monatomic ideal gas are initially at a
pressure of 1.00 atm and a temperature of 20.0OC. The gas is
compressed adiabatically to a final pressure of 5.00 atm. Find: (a)
the initial volume of the gas; (b) the final volume of the gas; (c)
the final temperature of the gas; (d) the work done by the gas
during the compression.
Answers: (a) 72.1 L; (b) 27.5 L; (c) 285 OC; (d) -97.8
atm-L
Please show...

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