1. Two moles of helium gas are placed in a cylindrical container with a piston. The gas is at room temperature 30 °C and under a pressure of 2.9 105 Pa. When the pressure from the outside is decreased, while keeping the temperature the same as the room temperature, the volume of the gas doubles. Use that the gas constant R = 8.31 J/(mol K). Think: What kind of process is this? Isobaric, isothermal, adiabatic, isochoric or non-quasi- static? (a) Find the work the external agent does on the gas in the process. W ext agent (b) Find the heat exchanged by the gas and indicate whether the gas takes in or gives up heat. Assume ideal gas behavior. Q= O Q is realeased by gas O Q is absorbed by the gas

1. Two moles of helium gas are placed in a cylindrical container with a piston. The gas is at room temperature 30 °C and under a pressure of 2.9 105 Pa. When the pressure from the outside is decreased, while keeping the temperature the same as the room temperature, the volume of the gas doubles. Use that the gas constant R = 8.31 J/(mol K). Think: What kind of process is this? Isobaric, isothermal, adiabatic, isochoric or non-quasi- static? (a) Find the work the external agent does on the gas in the process. W ext agent (b) Find the heat exchanged by the gas and indicate whether the gas takes in or gives up heat. Assume ideal gas behavior. Q= O Q is realeased by gas O Q is absorbed by the gas

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A cylinder filled with ideal gas has a piston of mass M=5kg and area A=10 cm?. The cylinder has a valve located at the bottom. The valve was initially opened and some of the gas escapes slowly. The valve is then closed, after which the piston is observed to be at a lower position. Assume that the system is in thermal equilibrium with the surroundings and the piston is allowed to move freely during the whole process. 1. What was the initial absolute pressure of the ideal gas before the valve was opened? Is the final pressure of the gas in the cylinder greater than, less than, or equal to the initial pressure? Explain. Explain how your answer is consistent with the forces acting on the piston in the initial and final states.
1. In a quasi-static isobaric expansion, 475 J of work are done by the gas. If the gas pressure is 0.7 atm, what is the fractional increase in the volume of the gas, assuming it was originally at 23 L? Use 1 atm 105 Pa & 1 L = 10-³ m³ ΔV V
A 4.00-mol sample of helium gas initially at 300K, and 0.4 atm is compressed isothermally to 1.60 atm. Noting that the helium behaves as an ideal gas. What is the work done on the gas? Select one: O a. 13.84 kJ O b. 5.48 kJ O c. 10.56 kJ O d. 17.88 kJ O e. 22.04 kJ
17. 12.0 L. of an ideal gas at the pressure of 4.12 atm. is expanded against the external pressure of 2.55 atm. Calculate the work upon the expansion. The temperature is 312 K. Hint: This process is isothermal expansion. O 1910 ) O 2550 J O 1910 J O 585 kJ
1. Two moles of helium gas are placed in a cylindrical container with a piston. The gas is at room temperature 27 °C and under a pressure of 3.3.105 Pa. When the pressure from the outside is decreased, while keeping the temperature the same as the room temperature, the volume of the gas doubles. Use that the gas constant R = 8.31 J/(mol K). Think: What kind of process is this? Isobaric, isothermal, adiabatic, isochoric or non-quasi-static? (a) Find the work the external agent does on the gas in the process. W = ext. agent (b) Find the heat exchanged by the gas and indicate whether the gas takes in or gives up heat. Assume ideal gas behavior. Q= ✓J Q is realeased by gas Q is absorbed by the gas
The molar volumes of dry gas, measured at 200 °F, are given in TableQ2(a). i. Determine the coefficient of isothermal compressibility of the gas at 900 psia and 200 °F? (4 mark) ii. Compare your result with compressibility of an ideal gas at 900 psia and 200°F. (1 mark) TableQ2(a) Molar Volume (cu ft/lb Pressure, psi mole) 600 10.6 700 6.7 800 8.9 900 8.4 1000 8.1 1100 7.9 1200 7.8
1. In a quasi-static isobaric expansion, 600 J of work are done by the gas. If the gas pressure is 0.7 atm, what is the fractional increase in the volume of the gas, assuming it was originally at 19 L? Use 1 atm≈ AV V 105 Pa & 1 L = 10-³ m³
1. A dilute gas at a pressure of 2.0 atm and a volume of 4.0 L is taken through the following quasi-static steps: (a) an isobaric expansion to a volume of 10.0 L, (b) an isochoric change to a pressure of 0.50 atm, (c) an isobaric compression to a volume of 4.0 L, and (d) an isochoric change to a pressure of 2.0 atm. Show these steps on a PV diagram drawn in your notebook and determine from your graph the net work done, Wgas by the gas. Use 1 atm~105 Pa and 1L = 10-3 m³. W gas
6 The diagram below depicts an ideal monatomic gas which is compressed isobarically at p = 1.05×10° Pa from state A (V₁ = 7.49×10 -3 m³) to state B (V₂ = 3.33×10 m³) where its temperature becomes T 3 B = 336°C. Its pressure is then increased at constant volume from state B to C and finally expanded isothermally until it returns to its initial state A. How much work is done by the gas and what is its temperature when it expanded during the isothermal process? с Pc B -A PA PB VB = VC VA The temperature of the gas during the isothermal process is 1370°C and the work done by the gas is 4105 kJ. The temperature of the gas during the isothermal process is 755.7 K and the work done by the gas is 2264 kJ. The temperature of the gas during the isothermal process is 1097°C and the work done by the gas is 6.375 kJ. The temperature of the gas during the isothermal process is 482.6 K and the work done by the gas is 2.834 kJ.
You would like to raise the temperature of an ideal gas from 295 K to 960 K in an adiabatic process. a)What compression ratio will do the job for a monatomic gas? b)What compression ratio will do the job for a diatomic gas?
1. Gas in a container is at 1.6 bar and 4.0 m'. What is the work done by the gas if it is compressed to one-fifths of its initial volume?
1. In a quasi-static isobaric expansion, 550 J of work are done by the gas. If the gas pressure is 0.9 atm, what is the fractional increase in the volume of the gas, assuming it was originally at 16 L? Use 1 atm 105 Pa & 1 L = 10-³ m -3 3 AV ✓ V =