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Chapter 3: Q18DQ (page 609)
A gas storage tank has a small leak. The pressure in the tank drops more quickly if the gas is hydrogen or helium than if it is oxygen. Why?
The Hydrogen and helium gas drops more quickly than the oxygen Because oxygen has a higher molar mass than hydrogen and helium.
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When energy shortages occur, magazine articles sometimes urge us to keep our homes at a constant temperature day and night to conserve fuel. They argue that when we turn down the heat at night, the walls, ceilings, and other areas cool off and must be reheated in the morning. So if we keep the temperature constant, these parts of the house will not cool off and will not have to be reheated. Does this argument make sense? Would we really save energy by following this advice?
The rate of effusion鈥攖hat is, leakage of gas through tiny cracks鈥攊s proportional to vrms. If tiny cracks exist in the material that鈥檚 used to seal the space between two glass panes, how many times greater is the rate of He leakage out of the space between the panes than the rate of Xe leakage at the same temperature?
(a) 370 times; (b) 19 times;
(c) 6 times; (d) no greater鈥攖he He leakage rate is the same as for Xe.
The gas used in separating the two uranium isotopesandhave the formula. If you added heat at equal rates to a mole ofgas and a mole ofgas, which one鈥檚 temperature would you expect to rise faster? Explain.
The pressure of a gas at the triple point of water is 1.35 atm. If its volume remains unchanged, what will its pressure be at the temperature at which CO2 solidifies?
SID: 973610-18-20DQ
The temperature of an ideal monatomic gas is increased from 25掳C to 50掳C. Does the average translational kinetic energy of each gas atom double? Explain. If your answer is no, what would the final temperature be if the average translational kinetic energy was doubled?
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