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Chapter 19: The Kinetic Theory of Gases

Fundamentals Of Physics
Pages: 549 - 582

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106 Questions for Chapter 19: The Kinetic Theory of Gases

  1. An ideal gas initially at300 Kis compressed at a constant pressure of25 N/m2from a volume of3.0 m3to a volume of1.8m3. In the process,75 Jis lost by the gas as heat. What

    Found on Page 582
  2. Question: A container encloses 2 mol of an ideal gas that has molar mass M1 and 0.5 mol of a second ideal gas that has molar mass m2 = 3 .m1 What fraction of the total pressure on the container wall is attributable to the second gas? (The kinetic theory explanation of pressure leads to the experimentally discovered law of partial pressures for a mixture of gases that do not react chemically: The total pressure exerted by the mixture is equal to the sum of the pressures that the several gases would exert separately if each were to occupy the vessel alone.)

    Found on Page 578
  3. Does the temperature of an ideal gas increase, decrease, or stay the same during (a) an isothermal expansion, (b) an expansion at constant pressure, (c) an adiabatic expansion, and (d) an increase in pressure at constant volume?

    Found on Page 578
  4. Question: Air that initially occupies 0.140 m3at a gauge pressure of 103 kPais expanded isothermally to a pressure of 101.3 kPaand then cooled at constant pressure until it reaches its initial volume.

    Found on Page 578
  5. When the US submarine Squalus became disabled at a depth of, a cylindrical chamber was lowered from a ship to rescue the crew. The chamber had a radius of1 mand a height of4 m, was open at the bottom, and held two rescuers. It slid along a guide cable that a diver had attached to a hatch on the submarine. Once the chamber reached the hatch and clamped to the hull, the crew could escape into the chamber. During the descent, air was released from tanks to prevent water from flooding the chamber. Assume that the interior air pressure matched the water pressure at depth h as given byrole="math" localid="1662369677002" p0+ρgh, wherep0=1.000atm

    Found on Page 578
  6. A sample of an ideal gas is taken through the cyclic process abca as shown in figure. The scale of the vertical axis is set bypb=7.5 kPaandpac=2.5 kPa. At point a,T=200 K.

    Found on Page 578
  7. Question: In the temperature range 310 K to 330 K, The pressure P of a certain non ideal gas is related to volume V and temperature T byp=(24.9JK)TV-(0.00662JK2)T2V

    Found on Page 578
  8. Question: Supposeof an ideal gas undergoes an isothermal expansion as energy is added to it as heat Q. If figure shows the final volume Vf versus Q, what is the gas temperature? The scale of the vertical axis is set by Vfs=.30m3, and the scale of the horizontal axis is set by Qs=1200

    Found on Page 578
  9. Question: An air bubble of volume 20 cm3is at the bottom of a lake 40 mdeep, where the temperature is 4. 0 0C. The bubble rises to the surface, which is at a temperature of. Take the temperature of 20 0C the bubble’s air to be the same as that of the surrounding water. Just as the bubble reaches the surface, what is its volume?

    Found on Page 578
  10. Question: Container A in figure holds an ideal gas at a pressure of 5.0×105Paand a temperature of 300 kIt is connected by a thin tube (and a closed valve) to container B, with four times the volume of A. Container B holds the same ideal gas at a pressure of 1.0×105Paand a temperature of 400 k. The valve is opened to allow the pressures to equalize, but the temperature of each container is maintained. What then is the pressure?

    Found on Page 578

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