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Category > Management Posted 22 Nov 2017 My Price 6.00

single-particle collisional frequency

Many of the concepts developed in this chapter can be applied to understanding the atmosphere. Because atmospheric air is comprised primarily of N2 (roughly 78% by volume), approximate the atmosphere as consisting only of N2 in answering the following questions:

a. What is the single-particle collisional frequency at sea level, with T = 298 K and P = 1.0 atm? The corresponding single-particle collisional frequency is reported as 1010 s-1 in the CRC Handbook of Chemistry and Physics (62nd ed., p. F-171).

b. At the tropopause (11 km), the collisional frequency decreases to 3.16 X 109 s-1 primarily due to a reduction in temperature and barometric pressure (i.e., fewer particles). The temperature at the tropopause is  220 K. What is the pressure of N2 at this altitude?

c. At the tropopause, what is the mean free path for N2?

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Maurice Tutor
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Status NEW Posted 22 Nov 2017 11:11 PM My Price 6.00

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