at 30 km above the earths surface (roughly in the middle of the statosphere) the pressure is roughly 0.013 atm and the gas density is 3.74 x 10^23 molecules/m^3 assuming N2 is represetative of the stratosphere using the collisional diameter information in 16.1 determine a) the number of collisions a single gas particle undergoes in the region of the statosphere in 1 sb)the total number of particle collisions that occur in 1 s

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