I'm having trouble understanding the adiabatic expansion of a perfect gas. My book gives the following graph, but I don't understand how the change in internal energy is 0 for process 1 (going from Ti,Vi to Ti,Vf). Youre expanding the gas-- would that not require work, ie: loss of internal energy? It's not like heat can be added to balance this out and keep the internal energy constant, since this is adiabatic. Why does only the temperature change (process 2) require work? My book only gives this as an explanation: "However, because the internal energy of a perfect gas is independent of the volume the mol- ecules occupy (Topic 2A), the overall change in internal energy arises solely from the second step, the change in temperature at constant volume."
Homework Answers
Add Answer to:
I'm having trouble understanding the adiabatic expansion of a
perfect gas. My book gives the following...
13.A monatomic ideal gas (N=9.1x1023), undergoes adiabatic expansion. During the expansion, the temperature of the gas...
13.A monatomic ideal gas (N=9.1x1023), undergoes adiabatic expansion. During the expansion, the temperature of the gas decreases from 800.0K to 500.OK. The initial volume of the gas is 0.10 m². a. What is the final volume and pressure of the gas, after expansion? b. What is the change in internal energy of the gas? C. Calculate the work associated with this process.
8. An ideal gas is maintained at a constant temperature of 250 K during an isothermal...
8. An ideal gas is maintained at a constant temperature of 250 K during an isothermal process while its volume decreases from V, = 0.6 m3 to Vf= 0.2 m, (a) What work is done on the system on its environment (in 3)?. (0) What is its change in internal energy (in I)?
Consider a monoatomic ideal gas undergoing the following cycle: starting point (a), pressure increases at a...
Consider a monoatomic ideal gas undergoing the following cycle: starting point (a), pressure increases at a constant volume reaching point (b), then the gas expands adiabatically until pressure reaches the initial value (point c), and then the gas is compressed at a constant pressure until the volume reaches the initial value back to point (a). The amount of gas is 1 mole. Monoatomic gas means it has only 3 degrees of freedom and the adiabatic constant gamma is 5/3. Sketch...
A piston containing 0.75 moles of a perfect gas at 25 degrees C is moved isothermally...
A piston containing 0.75 moles of a perfect gas at 25 degrees C
is moved isothermally from a starting volume of 8.305 L.
Calculate the work in joules if the piston is moved irreversibly
against a constant external pressure of 4.100 atm. We weren't
giving final volume so I am unsure of what to do. I tried to use
P1V1 = P2V2 because the final pressure is equal to external
pressure in an irreversible process. But then my final volume...
One mole of an ideal gas undergoes a reversible adiabatic expansion from T_1, to T_2 while...
One mole of an ideal gas undergoes a reversible adiabatic expansion from T_1, to T_2 while tripling the volume of the gas. What is the relation between T_1 and T-2? T-2/3 < T_1<T_2 T_2/3 < T_1 < T-2 T_1= T_2 T_2<T_1 T_1 lessthanorequalto T_2/3 One mole of Ar gas undergoes the reversible transformation shown. Assuming Ar behaves ideally, which statement is true for step 2? Delta U= C_p DeltaT DeltaH < Delta U Delat S= c_p ln(T_c/T_B) W = etaRt...
Which of the following statements does not apply to the definition of an ideal gas? Group...
Which of the following statements does not apply to the definition of an ideal gas? Group of answer choices a. Intermolecular interactions are negligible. b. The Gibbs free energy only depends upon the temperature. c. The enthalpy only depends upon the temperature. d. The internal energy only depends upon the temperature. e. None. The previous answers are all correct. Consider a solid substance. Which of the following expressions is wrong? Group of answer choices a. Internal energy increases when the...
1. Name three characteristics of the atoms in a gas that are essential for the gas...
1. Name three characteristics of the atoms in a gas that are essential for the gas to be ideal. Explain why these three qualities of the atoms or molecules make the gas ideal. 2. Considering the Boltzmann distribution of atomic/molecular speeds for an ideal gas at temperature T (in K) , order the following speeds from smallest to largest: average speed, most probable speed, and root mean squared speed. Why are they different speeds? 3. What is the most important...
4-/6.25 points My Notes SerCP10 12.P.023. An ideal monatomic gas is contained in a vessel of constant volume 0.260 m3....
4-/6.25 points My Notes SerCP10 12.P.023. An ideal monatomic gas is contained in a vessel of constant volume 0.260 m3. The initial temperature and pressure of the gas are 300 K and 5.00 atm, respectively. The goal of this problem is to find the temperature and pressure of the gas after 22.0 kJ of thermal energy is supplied to the gas. (a) Use the ideal gas law and initial conditions to calculate the number of moles of gas in the...
Hi please solve all of these physics problems on the sheet. Thank you. 601 The temperature...
Hi
please solve all of these physics problems on the sheet. Thank you.
601 The temperature of an object is best described as the a) heat content of the object. b) heat transferred to the material. e) total kinetic energy per kilogram of material d)average random kinetic energy per particle. 61] Compared to a blue star in the same local cluster, the surface temperature of a red star is a) greater. b) the same. c) lower. d) not consistently any...
PROBLEM 1: (50 pts) Consider the following isothermal monatomic ideal gas expansion processes: gradual (reversible) decrease...
PROBLEM 1: (50 pts) Consider the following isothermal monatomic ideal gas expansion processes: gradual (reversible) decrease in pressure from P, to Pa, such that the internal and external pressures remain in equilibrium at every step along the path. a) (20 pts) Obtain expressions for AU, W, AS, and Au for the above process (express your results as functions of n, T, P, and/or P2) b) (10 pts) Calculate the work exchanged (in J) in the process, assuming that n=1 mole,...
13.A monatomic ideal gas (N=9.1x1023), undergoes adiabatic expansion. During the expansion, the temperature of the gas decreases from 800.0K to 500.OK. The initial volume of the gas is 0.10 m². a. What is the final volume and pressure of the gas, after expansion? b. What is the change in internal energy of the gas? C. Calculate the work associated with this process.
8. An ideal gas is maintained at a constant temperature of 250 K during an isothermal process while its volume decreases from V, = 0.6 m3 to Vf= 0.2 m, (a) What work is done on the system on its environment (in 3)?. (0) What is its change in internal energy (in I)?
A piston containing 0.75 moles of a perfect gas at 25 degrees C
is moved isothermally from a starting volume of 8.305 L.
Calculate the work in joules if the piston is moved irreversibly
against a constant external pressure of 4.100 atm. We weren't
giving final volume so I am unsure of what to do. I tried to use
P1V1 = P2V2 because the final pressure is equal to external
pressure in an irreversible process. But then my final volume...
One mole of an ideal gas undergoes a reversible adiabatic expansion from T_1, to T_2 while tripling the volume of the gas. What is the relation between T_1 and T-2? T-2/3 < T_1<T_2 T_2/3 < T_1 < T-2 T_1= T_2 T_2<T_1 T_1 lessthanorequalto T_2/3 One mole of Ar gas undergoes the reversible transformation shown. Assuming Ar behaves ideally, which statement is true for step 2? Delta U= C_p DeltaT DeltaH < Delta U Delat S= c_p ln(T_c/T_B) W = etaRt...
4-/6.25 points My Notes SerCP10 12.P.023. An ideal monatomic gas is contained in a vessel of constant volume 0.260 m3. The initial temperature and pressure of the gas are 300 K and 5.00 atm, respectively. The goal of this problem is to find the temperature and pressure of the gas after 22.0 kJ of thermal energy is supplied to the gas. (a) Use the ideal gas law and initial conditions to calculate the number of moles of gas in the...
Hi
please solve all of these physics problems on the sheet. Thank you.
601 The temperature of an object is best described as the a) heat content of the object. b) heat transferred to the material. e) total kinetic energy per kilogram of material d)average random kinetic energy per particle. 61] Compared to a blue star in the same local cluster, the surface temperature of a red star is a) greater. b) the same. c) lower. d) not consistently any...
PROBLEM 1: (50 pts) Consider the following isothermal monatomic ideal gas expansion processes: gradual (reversible) decrease in pressure from P, to Pa, such that the internal and external pressures remain in equilibrium at every step along the path. a) (20 pts) Obtain expressions for AU, W, AS, and Au for the above process (express your results as functions of n, T, P, and/or P2) b) (10 pts) Calculate the work exchanged (in J) in the process, assuming that n=1 mole,...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago