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    caseyjean's Avatar
    caseyjean Posts: 1, Reputation: 1
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    #1

    Nov 29, 2006, 01:36 PM
    Chemistry: sodium azide, NaN3
    What mass of sodium azide, NaN3, is needed to fill a 85.0L air bag of a compact car upon collision assuming the barometric pressure is 29.5 in Hg and the temp. is 75.0'F?
    NaN3 ------> 2 Na(s) +3 N2(g)
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Nov 29, 2006, 11:25 PM
    for perfect gases (I assume you can make the assumption that N2 approximates a perfect gas): PV = nRT

    You have all the data you need to work out mass of NaN3 needed.

    enjoy! :D

    let me know if you need further help :)
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