http://www.flickr.com/photos/52224975@N0…
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mass = volume * concentration / unit volume
= 11.72 [ 5280]² ( 48.38)] W (0.312) µg , where W = liters / cu ft
≈ 28.33 liter / cu ft for W
= 11.72 [ 5280]² ( 48.38)] W (0.312) µg , where W = liters / cu ft
≈ 28.33 liter / cu ft for W