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21. Table 191 gives
M
= 28.0 g/mol for nitrogen. This value can be used in Eq. 1922
with
T
in Kelvins to obtain the results. A variation on this approach is to set up ratios,
using the fact that Table 191 also gives the rms speed for nitrogen gas at 300 K (the
value is 517 m/s). Here we illustrate the latter approach, using
v
for
v
rms
:
2
22
11
1
3/
.
RT
M
vT
RT M
==
(a) With
T
2
= (20.0 + 273.15) K
≈
293 K, we obtain
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics

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