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

Question

asked Jun 6, 2020 71.0k views

1 Answer

Mortb · Answer 1 · 2020-06-12T01:10:00+0000

Answer:

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