CHAPTER 5 MAKE UP HOMEWORK
1. A 48.3 mL sample of gas in
cylinder was warmed from 22
o
C to 87
o
C.
What is its volume at the final
temperature?
2. What is the volume occupied by 0.118 mol of helium gas at a pressure of 0.97 atm and a temperature of
305 K?
3. An automobile tire had a maximum rating of 38.0 psi (gauge pressure).
The tire is inflated (while cold)
to a volume of 11.8 L and a gauge pressure of 36.0 psi at a temperature of 12.0
o
C.
While driving on a
hot day, the tire warms to 65.0
o
C and it volume expands to 12.2 L.
Does the pressure in the tire exceed
its maximum rating?
(Note: the
gauge
pressure is the difference between the total pressure and
atmospheric pressure.
In this case, assume that atmospheric pressure is 14.7 psi.)
4. A sample of gas has a mass of 38.8 mg.
Its volume is 224 mL at a temperature of 55
o
C and a pressure
of 886 torr.
Find the molar mass of the gas.
5. A gas mixture contains 1.25 g N
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 Summer '04
 Bau
 12.2 L, 224 mL, 22.8 L, 25.5 L, 26.2 L

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