Concept explainers
Section 18.1 states that ordinarily, pressure, volume, and temperature cannot change individually without one affecting the others. Yet when a liquid evaporates, its volume changes, even though its pressure and temperature are constant. Is this inconsistent? Why or why not?
The fact for change of volume of the liquid that its temperature and pressure remains constant is consistent or not.
Explanation of Solution
In the phase change in of gases the change in one parameter causes the change in other may another parameter remains constant.
For phase change in liquid evaporation takes place. The change of state changes the pressure and temperature of the liquid which is independent of each other. For a condition of phase change temperature remains the same that means the pressure will also be constant.
Thus, it is obvious by the change of volume of vapor the pressure and temperature will not change.
Conclusion: Therefore, the fact for change of volume of the liquid that its temperature and pressure remains constant is consistent.
Want to see more full solutions like this?
Chapter 18 Solutions
University Physics with Modern Physics (14th Edition)
Additional Science Textbook Solutions
College Physics
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
The Cosmic Perspective
Conceptual Physical Science (6th Edition)
University Physics Volume 1
College Physics: A Strategic Approach (4th Edition)
- A cylinder with a piston holds 0.50 m3 of oxygen at an absolute pressure of 4.0 atm. The piston is pulled outward, increasing the volume of the gas until the pressure drops to 1.0 atm. If the temperature stays constant, what new volume does the gas occupy? (a) 1.0 m3 (b) 1.5 m3 (c) 2.0 m3 (d) 0.12 m3 (e) 2.5 m3arrow_forwardA cylinder that has a 40.0-cm radius and is 50.0 cm deep is filled with air at 20.0C and 1.00 atm (Fig. P10.74a). A 20.0-kg piston is now lowered into the cylinder, compressing the air trapped inside as it takes equilibrium height hi (Fig. P16.74b). Finally, a 25.0-kg dog stands on the piston, further compressing the air, which remains at 20C (Fig. P16.74c). (a) How far down (h) does the piston move when the dog steps onto it? (b) To what temperature should the gas be warmed to raise the piston and dog back to hi?arrow_forwardCylinder A contains oxygen (O2) gas, and cylinder B contains nitrogen (N2) gas. If the molecules in the two cylinders have the same rms speeds, which of the following statements is false? (a) The two gases haw different temperatures. (b) The temperature of cylinder B is less than the temperature of cylinder A. (c) The temperature of cylinder B is greater than the temperature of cylinder A. (d) The average kinetic energy of the nitrogen molecules is less than the average kinetic energy of the oxygen molecules.arrow_forward
- The rectangular plate shown in Figure P16.60 has an area Ai equal to w. If the temperature increases by T, each dimension increases according to Equation 16.4, where is the average coefficient of linear expansion. (a) Show that the increase in area is A = 2Ai T. (b) What approximation does this expression assume?arrow_forwardA 40.0-g projectile is launched by the expansion of hot gas in an arrangement shown in Figure P12.4a. The cross sectional area of the launch tube is 1.0 cm2, and the length that the projectile travels down the tube after starting from rest is 52 cm. As the gas expands, the pressure varies as shown in Figure P12.4b. The values for the initial pressure and volume are P1 = 11 105 Pa and Vi = 8.0 cm3 while the final values are Pf = 1.0 105 Pa and Vf = 8.0 cm3. Friction between the projectile and the launch tube is negligible, (a) If the projectile is launched into a vacuum, what is the speed of the projectile as it leaves the launch tube? (b) If instead the projectile is launched into air at a pressure of 1.0 105 Pa. what fraction of the work done by the expanding gas in the tube is spent by the projectile pushing air out of the way as it proceeds down tile tube?arrow_forwardA concrete swimming pool 12 m x 6 m x 2.5 m is filled with water to within 6 mm of the top when the temperature is 10 oC. The coefficient of linear expansion of the concrete is 0.90 x 10-5/oC. What will happen to the water level as the temperature rises? If it rises at what temperature will the water begin to overflow?arrow_forward
- A steel-belted radial automobile tire is inflated to a gauge pressure of 2.15 x 105 Pa when the temperature is 60 °F. Later in the day, the temperature rises to 103 °F. Assuming the volume of the tire remains constant, what is the gauge pressure at the elevated temperature? [Hint: Remember that the ideal gas law uses absolute pressure.] Paarrow_forwardThe temperature of a rigid, sealed, i.e., constant-volume, container of gas increases from 100°C to 200°C. The gas pressure increases by a factor of: (a) 2. (b) 1.3. (c) 1. (d) 0.8. (e) 0.5.arrow_forwardAn aluminum cup of 90 cm capacity is completely filled with glycerin at 20°C. How much glycerin will spill out of the cup if the temperature of both the cup and glycerin is increased to 37°C? (The linear expansion coefficient of aluminum is 23× 10° 1/C: The coefficient of volume expansion of glycerin is 5.1 x 104 1/C) Number Unitsarrow_forward
- Large helium-filled balloons are used to lift scientific equipment to high altitudes. What is the pressure inside such a balloon (in atm) if it starts out at sea level with a temperature of 20.8°C and rises to an altitude where its volume is sixteen times the original volume and its temperature is −35.7°C? (Enter your answer to at least 3 decimal places) What is the gauge pressure? (Enter your answer in atm and to at least 3 decimal places. Assume atmospheric pressure is constant.)arrow_forwardA bicycle tire has a pressure of 6.95 × 105 Pa at a temperature of 19.5°C and contains 2.00 L of gas. What will its pressure be, in pascals, if you let out an amount of air that has a volume of 125 cm3 at atmospheric pressure and at the temperature of the tire? Assume tire temperature and volume remain constant.arrow_forward5E. When a mercury-in-glass thermometer is overheated, the top will break off due to the pressure increase from the expansion of mercury which has completed filled the volume of the capillary. A thick, well-tempered glass tube may withstand a maximum pressure of 50 atm without breaking. How far can a thermometer be heated past the temperature at which a capillary is filled before the pressure becomes this large? For mercury, a=1.8x10ª K' and K=3.9x106 atm"'arrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning