Question

The number of moles in a sample of diatomic gas molecules is such that nR =...

The number of moles in a sample of diatomic gas molecules is such that nR = 300 J/K. The initial volume of this sample of gas is Va, and its initial temperature is Ta =250 K. The volume of this sample of gas is doubled (Vb =2 Va) in a constant pressure (isobaric) process and its temperature increases to Tb. What is the change in entropy DS of this gas sample as a result of the isobaric expansion to a volume 2V?

(A) Delta S = 728 J/K increase

(B) Delta S = 728 J/K decrease

(C) Delta S = 970 J/K increase

(D) Delta S = 970 J/K decrease

(E) Delta S = 0 (entropy does not change during an isobaric expansion)

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
When n moles of a monotonic gas undergo an adiabatic process, the temperature, pressure, and volume...
When n moles of a monotonic gas undergo an adiabatic process, the temperature, pressure, and volume change from (Ta, pa, Va) to (Tb, pb, Vb). If pb<pa, which statement is false? (A) Vb >Va (B) Tb <Ta (C) The change in internal energy is DU=Ub – Ua = 3/2 (pbVb – paVa). (D) The temperature Tb is given by Tb = Ta (Va/Vb)g. (E) The change in entropy is zero.
We consider an isolated system made up of 2 moles of an ideal gas which can...
We consider an isolated system made up of 2 moles of an ideal gas which can pass reversibly from a state A (PA, VA, TA = 300 K) to a state B (PB = 3PA, VB = VA / 3, TB) by a transformation which comprises two stages: it is first isochoric (constant volume), then isobaric (constant pressure). 1-Determine the work involved. The ideal gas constant is R = 8.31 J / K.mol, and the internal energy of an ideal...
2 moles of a monatomic perfect gas (initial state A and final state C) undergo an...
2 moles of a monatomic perfect gas (initial state A and final state C) undergo an isobaric expansion AB followed by an adiabatic expansion BC. TA= 18 C PA= 2*10^5 Pa VB= 0,048m^3 Calculate TB and the amount of heat Q exchanged in the transformation from A to C.
An ideal diatomic gas contracts in an isobaric process from 1.15 m3 to 0.600 m3 at...
An ideal diatomic gas contracts in an isobaric process from 1.15 m3 to 0.600 m3 at a constant pressure of 1.70 ✕ 105 Pa. If the initial temperature is 445 K, find the work done on the gas, the change in internal energy, the energy transfer Q, and the final temperature. (a) the work done on the gas (in J) (b) the change in internal energy (in J) (c) the energy transfer Q (in J) (d) the final temperature (in...
A 0.505-mol sample of an ideal diatomic gas at 408 kPa and 309 K expands quasi-statically...
A 0.505-mol sample of an ideal diatomic gas at 408 kPa and 309 K expands quasi-statically until the pressure decreases to 150 kPa. Find the final temperature and volume of the gas, the work done by the gas, and the heat absorbed by the gas if the expansion is the following. (a) isothermal final temperature K volume of the gas L work done by the gas J heat absorbed J (b) adiabatic final temperature K volume of the gas L...
3.      Two moles of an ideal gas at an initial temperature of 400 K are confined to...
3.      Two moles of an ideal gas at an initial temperature of 400 K are confined to a volume of 40.0 L.  The gas then undergoes a free expansion to twice its initial volume.  The container in which this takes place is insulated so no heat flows in or out.  (1 Liter = 10-3 m3)  R  =  8.314 J/(mole K) a)      What is the entropy change of the gas?  (15 points) b)      What is the entropy change of the universe?  (10 points)
Exactly 1.27 moles of an ideal gas undergoes an isothermal expansion (T = 259 K) from...
Exactly 1.27 moles of an ideal gas undergoes an isothermal expansion (T = 259 K) from state A to state B and then returns to state A by another process. The volume of the gas in state B is three times its initial volume. (a) For the process AB, find the work done by the gas and its change in entropy. work = J change in entropy = J/K (b) Find the gas's change in entropy for the process BA....
A 0.520-mol sample of an ideal diatomic gas at 432 kPa and 324 K expands quasi-statically...
A 0.520-mol sample of an ideal diatomic gas at 432 kPa and 324 K expands quasi-statically until the pressure decreases to 144 kPa. Find the final temperature and volume of the gas, the work done by the gas, and the heat absorbed by the gas if the expansion is the following. a) isothermal and adiabatic final temperature volume of the gas wrok done by the gas heat absorbed? K=?, L=?, work done?, heat absorb?
Two identical cylinders each contain the same amount of the same ideal gas with the same...
Two identical cylinders each contain the same amount of the same ideal gas with the same initial temperature, Tlow. The gas in the first cylinder undergoes an isovolumetric pressure increase and reaches a final temperature of Thigh. The gas in the second cylinder undergoes an isobaric expansion reaching the same final temperature, Thigh. What is the ratio of the change of entropy of the gas in the first cylinder to the change of entropy of the gas in the second...
The temperature of a sample of carbon dioxide gas was altered without altering the volume of...
The temperature of a sample of carbon dioxide gas was altered without altering the volume of the system. (a) Calculate the entropy change for the system if the final number of microstates is 0.713 times the initial number of microstates in the system. J/K: (b) Determine whether the temperature of the gas was raised or lowered, and explain your answer. Because the number of microstates (increased, remianed unchanged, or decreased) and the entropy (increased, remianed unchanged, or decreased), we can...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT