Ideal gas law problem concerning the exponetial atmosphere: part 4

[pentazoid]

1. Homework Statement [/b
Estimate the pressure , in atmospheres, at the following locations:Odgen Utah(1430 m above seas level);Leadville colorado(3090 m) Mt. Whithney (4420 m) and various other cities above sea level. (assume that the pressure at sea level is 1 atm.)

Homework Equations

P(z)=P(0)exp(-mgz/kT)?

The Attempt at a Solution

P(0)=1.0105e5 pascal = 1 atm.
how would I determine the mass and temperature. should I consider the molar mass of air molecules?

 

[pentazoid]

anybody not understand my question or/and my solution