Asked by julia


air bags actived when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. this causes NaN3 to decompose explosively according to the following reaction:

2NaN3(s)=2Na(s)+3N2(g)

what mas of NaN3 must be reacted to inflate an air bag to 70.0L at 0C & 1.00 atm?

is this correct:

n(N2): PV/RT
n=1.00 atm x 70.0L/0.0821(L*atm/mol*K) x273K = 3.12 mol N2

mass NaN3 reacted:

(3.12 mol N2) x (2mol NaN3/3molN2)x (65.02gNaN3/1molNaN3)= 135g NaN3

please let me know if I'm doing this correct and where can I find more examples to practice more, have my test tomorrow...thankx. :)


No one has answered this question yet.
Answered by DrBob222
It looks good to me.
Answered by julia
thank you for all your help Drbob222...just whish me luck for tomorrow in my test... :)
Answered by DrBob222
You're welcome. Good luck on your test.
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