Physics 2
Chapter 19 problems
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19.20 During an isothermal compression of an ideal gas, 335J of heat must be
removed from the gas to maintain constant temperature. How much work is
done by the gas during the process?
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19.25 Heat Q flows into a monatomic ideal gas, and the volume increases wile
the pressure is kept constant. What fraction of the heat energy is used to do the
expansion work of the gas?
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19.26 When a quantity of monatomic ideal gas expands at a constant pressure
of 4x104 Pa, the volume of the gas increases from 2x10-3 m3 to 8x10-3 m3. What
is the change in the internal energy of the gas?
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19.28 Three moles of an ideal monatomic gas expands at a constant pressure of
2.5 atm; the volume of the gas changes from 3.2x10-2 m3 to 4.5x10-2 m3.
(a)Calculate the initial and final temperatures of the gas.
(b)Calculate the amount of work the gas does in expanding.
(c)Calculate the amount of heat added to the gas.
(d)Calculate the change in internal energy of the gas.
Prepared by Vince Zaccone
For Campus Learning
Assistance Services at UCSB
Prepared by Vince Zaccone
For Campus Learning
Assistance Services at UCSB
Prepared by Vince Zaccone
For Campus Learning
Assistance Services at UCSB