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Question

The density of CO at 273 K and 1 atm is 1.2504 kg m3. Calculate
(a) root mean square speed (b) the average speed and (c) most probable speed.

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Solution

(a) The RMS speed is
URMS=3Pd

=3×1.013×105N/m21.2504
=493m/s

(b)The average speed is

Uav=0.9213URMS

=0.9213×493

=454.4m/s

(c) The most probable speed is

Ump=0.816×Urms

=0.816×493

=403m/s

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