7) A 1.20 mole sample of an ideal gas at 28.0°C expands isothermally from an initial...
5 moles of an ideal gas expand isothermally at T-27°C from an initial volume of 20 dm3 to a final volume of 60 dm3. Calculate the work for this process for a) expansion against constant external pressure of 105 Pa and b) reversible expansion. 2.
3. A sample of 3.0 mole of a perfect gas at 25 °C expands from 5.0 L to 15.0 L. How much are the entropy changes of the system and the surroundings, and the total change in entropy in the following processes: (a) the gas expands reversibly and isothermally; (b)the gas expands isothermally but irreversibly against an external pressure of zero (Pex= 0), and (c) the gas expands adiabatically and reversibly. (20 pts)
An ideal monatomic gas expands isothermally from 0.540 m3 to 1.25 m3 at a constant temperature of 570 K. If the initial pressure is 1.20 ✕ 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
Assume there's 1 mol ideal mono-atomic gas in a 22.4L container at 300K. The initial entropy of the system is 100J/K. For the following processes, calculate: a) q and w for a reversible expansion to twice the volume, isothermally. b) S and G for irreversible isothermal expansion against a constant 0.5 bar external pressure, to a final internal pressure of 0.5 bar. c) U and H for adiabatic reversible expansion to twice the volume.
A 2.5 mole sample of an ideal gas expands reversibly and isothermally at 360 K until its volume is doubled. What is the increase in entropy of the gas?
1. a) One mole of an ideal gas at 298.15 K is expanded reversibly and isothermally from 1.0 L to 15 L. Determine the amount of work in Joules. b) Determine the work done in Joules when one mole of ideal gas is expanded irreversibly from 1.0 L to 15.0 L against a constant external pressure of 1.0 atm.
3 1. One mole of an ideal gas expands isothermally at T = 20°C from 1.2 m² to 1.8 m². The gas constant is given by R= 8.314 J/mol K). (a) Calculate the work done by the gas during the isothermal expansion. W= (b) Calculate the heat transfered during the expansion Q= (c) What is the change in entropy of the gas? AS аук (c) What is the entropy change of the thermal reservoir? AS reservar JK (d) What is...
Q 4(a) [12.5 Marks] A sample consisting of 2 moles He is expanded isothermally at 0 Celsius from 5.0 dm3 to 20.0 dm3. Calculate w, q and U for each of the following situations: (i) A reversible expansion of the sample; (ii) An irreversible expansion of the sample against a constant external pressure equal to the final pressure of the gas; (iii) A free expansion (against zero external pressure, i.e., in a vacuum) of the sample.
Q 4(a) [12.5 Marks] A sample consisting of 2 moles He is expanded isothermally at 0oC from 5.0 dm3 to 20.0 dm3. Calculate w, q and U for each of the following situations: (i) A reversible expansion of the sample; (ii) An irreversible expansion of the sample against a constant external pressure equal to the final pressure of the gas; (iii) A free expansion (against zero external pressure, i.e., in a vacuum) of the sample.
A sample of 1.00 mol of N2 gas is expanded adiabatically from a volume of 10.00 dm3 and a temperature of 400 K to a volume of 20.00 - 3 -dm3. Assume that nitrogen is ideal, with Cv,m = 5R/2. (i) Find the final temperature if the expansion is carried out reversibly. (ii) Calculate the final temperature if the expansion is carried out with a constant external pressure of 1.00 atm. (iii) Find the final temperature if the gas expands...