Question

a monatomically ideal gas is expanded at 300K isotherm/ the volume increases from 3 * 10^-2 m^3 to 0.15 m^3. the final pressure of the gas is 60kPa. The ideal gas constantee is R=8.314 J/mol*K. the change of the internal energy of the gas is

Answer #2

Ans: **change in internal energy of the gas is
0**

Internal energy of an ideal gas is only function of the temperature.

So for ideal gas internal energy changes only when the temperature of the gas is changed.

If there is no change in temperature then internal energy of the gas will remain unchanged i.e change in internal energy will be 0.

Here it is clearly mentioned in the question that the process is an isothermal process occurring at 300K.

So here also change in internal energy will be 0.

Please give a positive rating by clicking on the thumbs up ? button if you get benefited from this answer? have a good day ahead. Thank you?

answered by: anonymous

A cylinder contains 1.5 moles of ideal gas, initially at a
temperature of 113 ∘C. The cylinder is provided with a frictionless
piston, which maintains a constant pressure of 6.4×105Pa on the
gas. The gas is cooled until its temperature has decreased to 27∘C.
For the gas CV = 11.65 J/mol⋅K, and the ideal gas
constant R = 8.314 J/mol⋅K.
1.Find the work done by the gas during this process.
2.What is the change in the internal (thermal) energy of...

3. 10.0 moles of ideal gas cloud has an initial pressure of 1.00
bar, initial volume of 100.0L and temperature of 25.0ºC. The cloud
expands adiabatically to a final volume of 1000.0L. Cp,m= 20.79 J /
mol K (Cp,m is molar heat capacity and constant pressure)
a. (10 pts) What is the final pressure of the gas cloud?
b. (10 pts) What is the final temperature of the gas cloud?
c. (10 pts) What is the change in entropy for...

An ideal monatomic gas is contained in a vessel of constant
volume 0.330 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 24.0 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 vessel. Your response differs
from the...

1.3 mole of an ideal gas at 300 K is expanded isothermally and
reversibly from a volume V to volume 4V. What is
the change in entropy of the gas, in
J/K?

The volume of an ideal gas is adiabatically reduced from 200 L
to 74.3 L. The initial pressure and temperature are 1.00 atm and
300 K. The final pressure is 4.00 atm.
? = 8.314 J/mol.K , ????????? = 1.4, ??????????? = 1.67 and 1
atm = 1.013 × 10^5 Pa. mol.K
(a) Is the gas monatomic or diatomic?
(b) What is the final temperature?
(c) How many moles are in the gas?

When 18.5 J was added as heat to a particular ideal gas, the
volume of the gas changed from 36.8 cm3 to 59.4
cm3 while the pressure remained constant at 0.944 atm.
(a) By how much did the internal energy of the gas
change? If the quantity of gas present is 1.38 x 10-3
mol, find the molar specific heat of the gas at
(b) constant pressure and (c)
constant volume.

One mole of an ideal gas is expanded isothermally and
irreversibly from an initial volume of 10.0 L to a final volume of
20.0 L at a pressure equal to the final pressure and a temperature
of 500 K. Calculate the value of w. Calculate the values of q.
Calculate the value of ΔS (system). Calculate the values of delta S
(surroundings). Calculate the values of ΔS (total).

2 mols of an ideal gas are at -73 deg C. What is the gas
internal kinetic energy?
(R = 8.314, and k = 1.38 x 10^-23)

Suppose 0.540 mol of an ideal gas is isothermally and reversibly
expanded in the four situations given below. What is the change in
the entropy of the gas for each situation?
Situation (a) (b) (c) (d)
Temperature (K) 250 350 400 450
Initial volume (cm3) 0.200 0.200 0.450 0.350
Final volume (cm3) 0.900 0.700 1.20 1.25
deltaS (J/K) _____ _____ _____ _____

Thermodynamics.Processes-PV-Diagrams.MS.KC.2:
A monoatomic ideal gas undergoes an isother- mal expansion that
increases the volume by 50%. No gas particles enter or leave the
system. Which of the following statements are true concerning this
process?
(a) The pressure decreases by 1/3.
(b) The pressure decreases by 1/2.
(c) The change in the internal energy of the gas is positive. (d)
The change in the internal energy of the gas is negative. (e) The
gas does work on the environment.
(f) The...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 13 minutes ago

asked 17 minutes ago

asked 20 minutes ago

asked 22 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago