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Physics and Chemistry

Chemical Elements

What is the density of air?

The density of dry air is 1.29 grams per liter at 32°F (0°C) at average sea level and a barometric pressure of 29.92 inches of mercury (760 millimeters).

The weight of one cubic foot of dry air at one atmosphere of barometric pressure is:

Temperature (Fahrenheit) Weight per cubic foot (pounds)
50° 0.07788
60° 0.07640
70° 0.07495


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