Atmosphere at very high altitudes In previous work we somewhat arbitrarily consi

Question

Atmosphere at very high altitudes
In previous work we somewhat arbitrarily considered empty space to start at a height of 50 kilometers above the surface of the Earth.

(a) At this altitude, what is the density of the air as compared to the density at sea-level? (Assume that the temperature at this altitude is 7°C, and the mass of one mole of air is 29 g.)

The density at 50 km is ?

(b) How many air molecules are there in one cubic centimeter at this altitude?
? molecules/cm3

(c) At what altitude is the air density one-millionth (10-6) that at sea level? (Assume that the temperature at this altitude is 7°C, and the mass of one mole of air is 29 g.)
? km

Explanation / Answer

a) ??? times less than density at sea level b)5.1e^16 c)113

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