At 30 km above the Earth€™s surface (roughly in the middle of the stratosphere), the pressure is roughly 0.013 atm and the gas density is 3.74 × 1023 molecules/m3. Assuming N2 is representative of the stratosphere, using the collisional diameter information provided in Table 33.1, determine:

a. The number of collisions a single gas particle undergoes in this region of the stratosphere in 1.0 s

b. The total number of particles collisions that occur in 1.0 s

c. The mean free path of a gas particle in this region of the stratosphere Using the ideal gas law, the temperature at 30 km can be determined as follows:

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(0.0130 atm)(1.01325 x 10° Pa atm-1) PV (3.74 x 1023 m³)(1.38 × 10-23 JK-) т Nk nR T = 255 K