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 in the
bicycle tire?
109 psi
11.
The volume of a weather balloon is 200.0 L and its internal pressure is 1.17 atm
when it is launched at 20.0°C.
The balloon rises to an altitude in the stratosphere
where its internal pressure is 63 mm Hg and the temperature is 210 K. What is the
volume of the balloon then?
2.02 x 10
3
L
12.A 0.850-mole sample of nitrous oxide, a gas used as an anesthetic by dentists, has a volume of 20.46 L at 123°C and 1.35 atm. What would be its volume at 468°C and 1.35 atm?
13.
Calculate the pressure of a helium sample at -207.3
°
C and 768 mL, if it exerts a
pressure of 175 kPa at 25.0
°
C and 925 mL.
46.5 kPa
14.
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?
309Ar remains
Nitrogen dioxide is a red-brown gas that is responsible for the color of
photochemical smog. A sample of nitrogen dioxide has a volume of 28.6 L at
45.3
°
C and 89.9 kPa. What is its volume at STP?
21.7 L
15.
A sample of nitrogen gas has a volume of 1.75 L at STP.
How many moles of N
2
are present?
0.0781 moles

#### You've reached the end of your free preview.

Want to read all 3 pages?

- Fall '12
- Kumar