Question

3. What is the average surface temperature for dry air, given standard pressure of 101.325 kPa and density of 1.225 kg/m3?

Answer 1

T = 288.15 K

Step-by-step explanation:

from gas law for dry air, the average surface temperature of dry air in the atmosphere can be computed as:

`\rho = (P)/(RT)`

where,
`\rho` is density of dry air = 1.225 kg/m3,

P is standard air pressure) =101.325 kPa = 101325 Pa,

R is gas constant = 287.05 J / (kg.K)

substituting the values, we get

`1.225 = (101325)/((287.05) (T))`

solving for T we get

`T = (101325)/(( (287.05) (1.225) ))`

T = 288.15 K