Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements: 2NaN3(s)→2Na(s)+3N2(g) How many...

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Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements: 2NaN3(s)→2Na(s)+3N2(g) How many...

Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements: 2NaN3(s)→2Na(s)+3N2(g) How many grams of sodium azide are required to produce 30.5 g of nitrogen?

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Answer 1

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Answer #1

N2 moles = ass of N2 / molar mass of N2 =30.5/28 = 1.0893

2NaN3 gives 3 N2

NaN3 moles = ( 2/3) moles of N2 ( as per coeffiencts in balanced equation)

Hence NaN3 moles = ( 2/3) x 1.0893 = 0.7262

NaN3 mass = moles of NaN3 x molar mass of NaN3 = 0.7262 x 65 = 47.2 g

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Answer 2

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