1. Engineers design air bags that deploy almost instantly upon impact. To do this, an air bag must provide a large amount of gas in a very short time. Many manufacturers use sodium azide, NaN3, to produce the gas in such a manner

Question

1.	Engineers design air bags that deploy almost instantly upon impact. To do this, an air bag must provide a large amount of gas in a very short time. Many manufacturers use sodium azide, NaN3, to produce the gas in such a manner

2NaN3(s)  2Na(s) + 3N2(g)

What volume of N2 gas is produced if 117.0g of sodium azide is reacted at 20.2C and 101.2 kPa?

a.	How many molecules of N2 are present in this volume?  (Use Avogadro’s constant)

b.	How many nitrogen atoms are present in this volume?

2.	Consider the incomplete combustion reaction that you observed with the butane lighter:

C4H8 + 5O2  3CO2 + 4H20 + C(s)

Assume that the butane is a gas at the time of combustion. Assume that, at SATP, a mass of 0.01 of butane is burned.

a.	What mass of solid carbon is produced?
b.	How many atoms is this?

3.	In a brief statement (about 150 words), describe a situation where knowledge of the idea gas law and stoichiometric calculations are, or may be, used in a technological application. You may do a little research on this matter. It is not critical that you understand the precise mathematics of what you are researching – you just need to explain how knowledge of the laws we’ve discussed would be useful.