University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Textbook Question
Chapter 19, Problem 19.55P
Use the conditions and processes of Problem 19.54 to compute (a) the work done by the gas, the heat added to it, and its internal energy change during the initial expansion; (b) the work done, the heat added, and the internal energy change during the final cooling; (c) the internal enery change during the isothermal compression.
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As shown in the figure, a chamber with a moveable piston and containing a monatomic ideal gas in an initial state A undergoes an isovolumetric, then an isothermal, and finally an isobaric process to complete the cycle.
P (atm)
IV (L)
When the gas is in the initial state, the volume is 3.00 L, the pressure is 5.00 atm, and the temperature is 200 K. The gas is first warmed at constant volume to a pressure of 4 times the initial value (state B). The gas is then allowed to expand isothermally to some new volume (state C). Finally it is compressed isobarically to its initial state. (Due to the nature of this
problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.)
(a) Find the number of moles of the gas.
moles
(b) Find the temperature of the gas at state B (in K).
(c) Find the temperature of the gas at state C (in K).
Suppose 4.00 moles of an ideal gas in a 5.00 L container at 20 atm expands, a. Calculate how much work was done by the gas in an irreversible, isothermal expansion at a constant external pressure of 5 atm . (work, J) 4 sig. figs b. Calculate how much work was done by the gas in a reversible, isothermal expansion (work, J) 4 sig figs. Additional Given Values: R = 0 0.08205 atmLmol 1atm = 101325Pa
As shown in the figure, a chamber with a moveable piston and containing a monatomic ideal gas in an initial state A undergoes an isovolumetric, then an isothermal, and finally an isobaric process to complete the cycle.
When the gas is in the initial state, the volume is 3.00 L, the pressure is 5.00 atm, and the temperature is 200 K. The gas is first warmed at constant volume to a pressure of 4 times the initial value (state B). The gas is then allowed to expand isothermally to some new volume (state C). Finally, it is compressed isobarically to its initial state. Due to the nature of this problem, do not use rounded intermediate values in your calculations.
Determine values (in kJ) for Q, W, and ΔEint for the process C → A.
Determine values (in kJ) for Q, W, and ΔEint for the complete cycle A → B → C → A.
Chapter 19 Solutions
University Physics (14th Edition)
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