Answer to Question #247504 in Molecular Physics | Thermodynamics for mion

Question

What is the density of air in kg/m^3 under the standard conditions where T = 70 degree Farenheit?

Answer 1

At 20°C and 101.325 kPa, the density of dry air is 1.2041 kg/m³.

20°C = (9/5(20) + 32)°C $\approx$ 70°F

1.2041 kg/m³ × 0.06243 lb/ft³ (pounds per cubic foot) = 0.074887 Ib/ft³

$\therefore$ At 70°F and 14.696 psi, the density of dry air is 0.074887 lb/ft³$.$