Physics problem, please help
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Physics problem, please help

[From: ] [author: ] [Date: 12-03-10] [Hit: ]
n is doubled... therefore T must be halved.......
Initially, the translational rms speed of a molecule of an ideal gas is 468 m/s. The pressure and volume of this gas are kept constant, while the number of molecules is doubled. What is the final translational rms speed of the molecules?

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PV = nRT

P is the same, V is the same, n is doubled... therefore T must be halved.

The final speed must be 468/√2 m/s
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