Chapter 18: Q. 9 (page 511)
1.0 mol of gold is shaped into a sphere. What is the sphere’s
diameter?
The solution deals with the transformation of gold into a sphere.
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The mercury manometer shown in FIGURE P18.56 is attached
to a gas cell. The mercury height h is 120 mm when the cell is
placed in an ice-water mixture. The mercury height drops to
30 mm when the device is carried into an industrial freezer.
What is the freezer temperature?
Hint: The right tube of the manometer is much narrower than the
left tube. What reasonable assumption can you make about the gas
volume?
A hollow aluminum sphere with outer diameter 10.0 cm has a
mass of 690 g. What is the sphere’s inner diameter?
Rank in order, from highest to lowest, the temperatures
T1 = 0 K, T2 = 0 C, and T3 = 0 F.
The atomic mass number of copper is A = 64. Assume that atoms in solid copper form a cubic crystal lattice. To envision this, imagine that you place atoms at the centers of tiny sugar cubes, then stack the little sugar cubes to form a big cube. If you dissolve the sugar, the atoms left behind are in a cubic crystal lattice. What is the smallest distance between two copper atoms?
a. Is there a 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 vapor can exist?
If so, what is it? If not, why not?
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