Homework Help: Chemistry

Posted by Dani on Friday, December 9, 2011 at 1:00am.

Apply the gas laws to determine how many grams of sodium azide (NaN3) are needed to fill the air bag of your vehicle to a volume of 79.0 L at 35.0 degrees celsius and 1.00 atm. The reaction occurring in the air bag can be repesented by the equation, 2NaN3 (s)-> 2Na (s) + 3 N2 (g). The gas constant, R, is equal to 0.0821 L atm mol ^-1 K ^-1

Chemistry - DrBob222, Friday, December 9, 2011 at 1:10am
2NaN3 ==> 2Na + 3N2
Use PV = nRT to convert 79.0 L N2 to moles at the conditions listed.
Then use the coefficients in the balanced equation to convert moles N2 to moles NaN3. Finally, moles NaN3 = grams NaN3/molar mass NaN3.

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