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Problem: Automobile air bags inflate during a crash or sudden stop by the rapid generation of nitrogen gas from sodium azide, according to the reaction:2NaN3 (s) → 2Na(s) + 3N2 (g)How many grams of sodium azide are needed to provide sufficient nitrogen gas to fill a 40.0 x 40.0 x 25.0 cm bag to a pressure of 1.19 atm at 23.0°C?

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Problem Details

Automobile air bags inflate during a crash or sudden stop by the rapid generation of nitrogen gas from sodium azide, according to the reaction:

2NaN3 (s) → 2Na(s) + 3N2 (g)

How many grams of sodium azide are needed to provide sufficient nitrogen gas to fill a 40.0 x 40.0 x 25.0 cm bag to a pressure of 1.19 atm at 23.0°C?


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Based on our data, we think this problem is relevant for Professor McCullagh's class at OKSTATE.