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Chapter 17: Problem 9
Ice and water have been together in a glass for a long time. Is the water hotter than the ice?
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Your professor asks you to order a tank of argon gas for a lab experiment. You obtain a "type C" gas cylinder with interior volume \(6.88 \mathrm{L}\). The supplier claims it contains 45 mol of argon. You measure its pressure to be 14 MPa at room temperature \(\left(20^{\circ} \mathrm{C}\right)\) Did you get what you paid for?
A pressure cooker has a regulating mechanism that releases steam so as to maintain constant pressure. If that mechanism became clogged a. the pressure would nevertheless level off once water in the cooker began to boil. b. the pressure would continue to rise although the temperature would remain constant. c. both temperature and pressure would continue to rise. d. the density of the steam would decrease.
According to the ideal-gas law, what should be the volume of a gas at absolute zero? Why is this result absurd?
A typical pressure cooker operates at twice normal atmospheric pressure, raising water's boiling point to about \(120^{\circ} \mathrm{C}\). Compared with steam at 1 atm and the normal \(100^{\circ} \mathrm{C}\) boiling point, the density of steam in a pressure cooker is a. double. b. somewhat more than double. c. somewhat less than double. d. quadruple.
Show that the coefficient of volume expansion of an ideal gas at constant pressure is the reciprocal of its kelvin temperature.
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