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Chapter 18: Q. 6 (page 511)
How many atoms are in a 2.0 cm * 2.0 cm * 2.0 cm cube of
aluminum?
The solution deals with the number of atoms of aluminium
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The nucleus of a uranium atom has a diameter of 1.5 * 10-14 m
and a mass of 4.0 * 10-25 kg. What is the density of the nucleus?
A diving bell is a -tall cylinder closed at the upper end but open at the lower end. The temperature of the air in the bell is . The bell is lowered into the ocean until its lower end is deep. The temperature at that depth is .
a. How high does the water rise in the bell after enough time has passed for the air inside to reach thermal equilibrium?
b. A compressed-air hose from the surface is used to expel all the water from the bell. What minimum air pressure is needed to do this?
The temperature increases from 300 K to 1200 K as a gas undergoes
the process shown in FIGURE Q18.11. What is the final
pressure?
a. A sample of water vapour in an enclosed cylinder has an initial pressure of 500 Pa at an initial temperature of -0.01°C. A piston squeezes the sample smaller and smaller, without limit. Describe what happens to the water as the squeezing progresses.
b. Repeat part a if the initial temperature is 0.03°C warmer.
A hollow aluminum sphere with outer diameter 10.0 cm has a
mass of 690 g. What is the sphere’s inner diameter?
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