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Chapter 18: Q. 2 (page 510)
The sample in an experiment is initially at 10 C. If the sample’s
temperature is doubled, what is the new temperature in C?
Temperature is a property of system
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A cylinder contains nitrogen gas.A piston compresses the gas
to half its initial volume.
a. Has the mass density of the gas changed? If so, by what factor?
If not, why not?
b. Has the number of moles of gas changed? If so, by what factor?
If not, why not?
A rigid container holds of gas at a pressure of and a temperature of .
a. What is the container’s volume?
b. What is the pressure if the temperature is raised to ?
A student is asked to sketch a pV diagram for a gas that goes
through a cycle consisting of (a) an isobaric expansion, (b) a
constant-volume reduction in temperature, and (c) an isothermal
process that returns the gas to its initial state. The student draws
the diagram shown in FIGURE Q18.12. What, if anything, is wrong
with the student’s diagram?
To determine the mass of neon contained in a rigid, cylinder, you vary the cylinder’s temperature while recording the reading of a pressure gauge. Your data are as follows:
| Temperature (°C) | Pressure gauge (atm) |
| 100 | 6.52 |
| 150 | 7.80 |
| 200 | 8.83 |
| 250 | 9.59 |
Use the best-fit line of an appropriate graph to determine the mass of the neon.
A gas under goes the process shown in FIGURE Q18.10. By what factor does the temperature change?
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