Airbags contain a mixture of sodium azide, potassium nitrate, and silicon dioxide.

1. Airbags contain a mixture of sodium azide, potassium nitrate, and silicon dioxide. A sensor detects a head on collision that cause the sodium azide to be ignited and to decompose forming sodium and nitrogen gas. This gas fills a nylon or polyamide bag such that the front face of the bag travels at a velocity of 150 to 250 miles per hour. This process, from the initial impact of the crash to full inflation of the airbag, takes only about 40 milliseconds. Sodium is very dangerous so the sodium reacts with potassium nitrate present to produce potassium oxide (K2O), sodium oxide (Na2O), and additional N2 gas. The N2 generated in this second reaction also fills the airbag. The metal oxides react with silicon dioxide (SiO2) in a final reaction to produce silicate(glass), which is harmless and stable. a. Write a balanced chemical equation for the first reaction in the airbag gas generator (the decomposition of NaN3).b.Write a balanced equation for the net gas-generating reactions (the combination of the first and second reactions). c.If a car has an airbag that has a volume of 60.0L and the bag requires a pressure of 2.37 atm at 25.00C, calculate the grams of sodium azide needed to inflate the bag. 2. Write a Lewis dot for azide ion showing all its possible resonance structures. Draw the structures illustrating the molecular geometry. Give the name of the molecular geometry around the central atom. Give the hybridization around the central atom. 3. You wish to prepare a buffer solution containing NaN3 and HN3 (hydrazoic acid). You have to prepare the solutions first. a. 187 g of sodium azide is dissolved in water to make a solution with a final volume of 1.0L. What is the concentration and pH of the solution?b.What is the molarity a solution made by adding 120.0 mL of a 6.0 M HN3(aq) to water to a final volume of 250.0 mL?c.What volume of the HN3(aq) made in part b is needed to add to 100.0 mL of the NaN3(aq) solution of made in part a to make a buffer at pH= 5.00?4. [Mn(bipy)(N3)2] is a coordination complexwith azide ion. What is the charge on the manganese? What is the overall charge on the complex? What is the name of this coordination complex?

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