Concentration problem, please help
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Concentration problem, please help

[From: ] [author: ] [Date: 11-09-11] [Hit: ]
312) µg,≈ 28.......
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
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