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Chapter 19: Q. 36 (page 544)
What maximum power can be radiated by a 10-cm-diameter solid lead sphere? Assume an emissivity of 1.
The answer is
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A 2000 cm3 container holds 0.10 mol of helium gas at 300°C. How much work must be done to compress the gas to 1000 cm3 at (a) constant pressure and (b) constant temperature?
In Problems 74 through 76 you are given the equation used to solve a problem. For each of these, you are to
a. Write a realistic problem for which this is the correct equation.
b. Finish the solution of the problem.
75.
A 500 g metal sphere is heated to 300 C, then dropped into a
beaker containing 300 cm3 of mercury at 20.0 C. A short time later
the mercury temperature stabilizes at 99.0 C. Identify the metal.
52. An ideal-gas process is described by , where is a CALC constant.
a. Find an expression for the work done on the gas in this process as the volume changes from to .
b. of gas at an initial temperature of is compressed, using this process, from to . How much work is done on the gas?
c. What is the final temperature of the gas in ?
A container holds 1.0 g of oxygen at a pressure of 8.0 atm.
a. How much heat is required to increase the temperature by
100 C at constant pressure?
b. How much will the temperature increase if this amount of
heat energy is transferred to the gas at constant volume?
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