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Chapter 18: Q. 5 (page 511)
How many moles are in a 2.0 cm * 2.0 cm * 2.0 cm cube of
copper?
The solution gives the description of moles of copper.
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a. Is there the highest temperature at which ice can exist? If so what is it? If not, why not?
b. Is there a lowest temperature at which water vapour can exist?
if so, what is it? If not, why not?
A gas is in a Sealed container. The pressure is tripled and the temperature is doubled.
a. does the number of molecules within the container increase. decrease or stay the same?
b. By what factor does the number density of the gas increases.
A -diameter cylinder that is long contains of oxygen gas at
a. How many moles of oxygen are in the cylinder?
b. How many oxygen molecules are in the cylinder?
c. What is the number density of the oxygen?
d. What is the reading of a pressure gauge attached to the tank
The circular piston shown in FIGURE P18.58 floats on of compressed air.
a. What is the piston height if the temperature is ?
b. How far does the piston move if the temperature is increased by ?
A brass ring with inner diameter 2.00 cm and outer diameter 3.00 cm needs to fit over a 2.00-cm-diameter steel rod, but at 20C the hole through the brass ring is 50 mm too small in diameter. To what temperature, inC, must the rod and ring be heated so that the ring just barely slips over the rod?
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