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CHAPTER 5 HOMEWORK SOLUTIONS
28.
A gauge on a compressed gas cylinder reads 2200 psi (pounds per square inch; 1 atm
= 14.7 psi).
Express this pressure in each of the following units.
a. standard atmospheres
b. megapascals (MPa)
c. torr
38. Complete the following table for an ideal gas.
P
V
n
T
a
7.74 x 10
3
Pa
12.2 mL
25
o
C
b
43.0 mL
0.421 mol
223 K
c
455 torr
4.4 x 10
-2
mol
331
o
C
d
745 mm Hg
11.2 L
0.401 mol

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*Sign up* 44.
A bicycle tire is filled with air to a pressure of 100. psi at a temperature of 19
o
C.
Riding the bike on asphalt on a hot day increases the temperature of the tire to 58
o
C.
The volume of the tire increases by 4.0 %.
What is the new pressure of the bicycle tire?
46.
A container is filled with an ideal gas to a pressure of 40.0 atm at 0
o
C.
a. What will be the pressure in the container if it is heated to 45
o
C?
b. At what temperature would the pressure be 1.50 x 10
2
atm?
c. At what temperature would the pressure be 25.0 atm?

48. A compressed gas cylinder contains 1.00 x 10
3
g of argon gas.
The pressure inside
the cylinder is 2050. psi (pounds per square inch) at a temperature of 18
o
C.
How much
gas remains in the cylinder if the pressure is decreased to 650. psi at a temperature of 26
o
C?
56. Sulfur trioxide, SO

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