1. The problem statement, all variables and given/known data If atmosphere can be treated as an isothermal ideal gas of constant mean molecular mass m, show that density drops exponentially with height - ρ= [ρ0]e^-z/h - where h is a constant 2. Relevant equations ρ= [ρ0]exp^-z/h (derivation of ...) ρ=density ρ0=initial density at sea level z = height h = scale height (found in later question to be 8.5km) The previous question was also a derivation --> dP/dz = -gρ which I managed. May or not be a starting point to this question (P = pressure, z = distance, g= acc due to grav, ρ = density) 3. The attempt at a solution I've read my lecture notes about 100x but can't even begin to see where this derivation can come from. A previous derivation was the equation dP/dz = -gρ (P = pressure, z = distance, g= acc due to grav, ρ = density) ____ Sorry ese's, I posted this in the wrong section to start with.