# Calculating the average number of air molecules at a specific altitude and atmospheric temperature.

At an altitude of 55.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?

Hint: Solve the equation for the pressure as a function of height and temperature and from this use the ideal gas equation to calculate the volume of air.

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...on due to gravity

k = Boltzmann's constant

T = absolute temperature (temperature in kelvin)

e = is the mathematical constant e : )

This will give you the pressure, make sure that you convert to ...