Answered: Pistons locked in place Valve P= 1.75…

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Pistons locked in place Valve P= 1.75 atm V 16.8 L T= 300 K P= 2.25 atm V 22.4 L T 450 K Figure P20.15

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter7: Electric Potential

Section: Chapter Questions

Problem 2CQ: Why do we need to be careful about work done on the system versus work done by the system in...

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Question

Two thermally insulated vessels are connected by a narrow tube lined with a valve that is initially closed as shown in Figure P20.15. One vessel of volume 16.8 L contains oxygen at a temperature of 300 K and a pressure of 1.75 atm. The other vessel of volume 22.4 L contains oxygen at a temperature of 450 K and a pressure of 2.25 atm. When the valve is opened, the gases in the two vessels mix and the temperature and pressure become uniform throughout, (a) What is the final temperature? (b) What is the final pressure?

Pistons locked
in place
Valve
P= 1.75 atm
V 16.8 L
T= 300 K
P= 2.25 atm
V 22.4 L
T 450 K
Figure P20.15

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