<P> The density of air ρ (Greek: rho) (air density) is the mass per unit volume of Earth's atmosphere . Air density, like air pressure, decreases with increasing altitude . It also changes with variation in atmospheric pressure, temperature and humidity . At 101.325 kPa (abs) and 15 ° C, air has a density of approximately 1.225 kg / m3 (0.001225 g / cm3, 0.0023769 slug / (cu ft), 0.0765 lb / (cu ft)) according to ISA (International Standard Atmosphere). </P> <P> Air density is a property used in many branches of science, engineering, and industry, including aeronautics; gravimetric analysis; the air - conditioning industry; atmospheric research and meteorology; agricultural engineering (modeling and tracking of Soil - Vegetation - Atmosphere - Transfer (SVAT) models); and the engineering community that deals with compressed air . </P>

What is the density of air in g/ml
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