Problem 1E: Why are sharp knives more effective than dull knives (Hint: think about the definition of pressure)? Problem 2E: Why do some small bridges have weight limits that depend on how many wheels or axles the crossing... Problem 3E: Why should you roll or belly-crawl rather than walk across a thinly-frozen pond? Problem 4E: A typical barometric pressure in Redding. California, is about 750 mm Hg. Calculate this pressure in... Problem 5E: A typical barometric pressure in Denver, Colorado, is 615 mm Hg. What is this pressure in... Problem 6E: A typical barometric pressure in Kansas City is 740 torr. What is this pressure in atmospheres, in... Problem 7E: Canadian tire pressure gauges are marked in units of kilopascals. What reading on such a gauge... Problem 8E: Dining the Viking landings on Mars, the atmospheric pressure was determined to be on the average... Problem 9E: The pressure of the atmosphere on the surface of the planet Venus is about 88.8 atm. Compare that... Problem 10E: A medical laboratory catalog describes the pressure in a cylinder of a gas as 14.82 MPa. What is the... Problem 11E: Consider this scenario and answer the following questions: On a mid-August day in the northeastern... Problem 12E: Why is it necessary to use a nonvolatile liquid in a barometer or manometer? Problem 13E: The pressure of a sample of gas is measured at sea level with a closed-end manometer. The liquid in... Problem 14E: The pressure of a sample of gas is measured with an open-end manometer, partially shown to the... Problem 15E: The pressure of a sample of gas is measured at sea level with an open-end mercury manometer.... Problem 16E: The pressure of a sample of gas ¡s measured a sea level with an open-end mercury manometer. Assuming... Problem 17E: How would the use of a volatile liquid affect the measurement of a gas using open-ended manometers... Problem 18E: Sometimes leaving a bicycle in the sun on a hot day will cause a blowout. Why? Problem 19E: Explain how the volume of the bubbles exhausted by a scuba diver (Figure 9.16) change as they rise... Problem 20E: One way to state Boyle’s law is All other things being equal, the pressure of a gas is inversely... Problem 21E: An alternate way to state Avogadro’s law is A1l other things being equal, the number of molecules in... Problem 22E: How would the graph in Figure 9.12 change if the number of moles of gas in the sample used to... Problem 23E: How would the graph in Figure 9.13 change if the number of moles of gas in the sample used to... Problem 24E: In addition to the data found in Figure 9.13, what other information do we need to find the mass of... Problem 25E: Determine the volume of 1 mol of CH4 gas at 150 K and 1 atm, using Figure 9.12. Problem 26E: Determine the pressure of the gas in the syringe shown in Figure 9.13 when its volume is 12.5 mL,... Problem 27E: A spray can is used until it is empty except for the propellant gas, which has a pressure of 1344... Problem 28E: What is the temperature of an 11.2-L sample of carbon monoxide, CO, at 744 torr if it occupies 13.3... Problem 29E: À 2.50-L volume of hydrogen measured at —196 C is warmed to 100 C. Calculate the volume of the gas... Problem 30E: A balloon inflated with three breaths of air has a volume of 1.7 L. At the same temperature and... Problem 31E: A weather balloon contains 8.80 moles of helium at a pressure of 0.992 atm and a temperature of 25 C... Problem 32E: The volume of an automobile air bag was 66.8 L when inflated at 25 C with 77.8 g of nitrogen gas.... Problem 33E: How many moles of gaseous boron trifluoride, BF3, are contained in a 4.3410-L bulb at 788.0 K if the... Problem 34E: Iodine, I2, is a solid at room temperature but sublimes (converts from a solid into a gas) when... Problem 35E: How many grams of gas are present in each of the following cases? (a) 0.100 L of CO2 at 307 torr and... Problem 36E: A high altitude balloon is filled with 1041104 L of hydrogen at a temperature of 21 C and a pressure... Problem 37E: A cylinder of medical oxygen has a volume of 3S.4 L. and contains O2 at a pressure of 1S1 atm and a... Problem 38E: A large scuba tank (Figure 9.16) with a volume of 18 L is rated for a pressure of 220 bar. The tank... Problem 39E: A 20.0-L cylinder containing 11.34 kg of butane, C4H10, was opened to the atmosphere. Calculate the... Problem 40E: While resting, the average 70-kg human male consumes 14 L of pure O2 per hour at 25 C and 100 kPa.... Problem 41E: For a given amount of gas showing ideal behavior, draw labeled graphs of: (a) the variation of P... Problem 42E: A liter of methane gas, CH4, at STP contains more atoms of hydrogen than does a liter of pure... Problem 43E: The effect of chlorofluorocarbons (such as CCl2F2) on the depletion of the ozone layer is well... Problem 44E: As 1 g of (lie radioactive element radium decays over 1 year. k produces 1.161018 alpha particles... Problem 45E: A balloon that is 100.21 L at 21 C and 0.981 atm is released and just barely clears the top of Mount... Problem 46E: If the temperature of a fixed amount of a gas is doubled at constant volume, what happens to the... Problem 47E: If the volume of a fixed amount of a gas is tripled at constant temperature, what happens to the... Problem 48E: What is the density of laughing gas, dinitrogen monoxide, N2O, at a temperature of 325 K and a... Problem 49E: Calculate the density of Freon 12, CF2Cl2, at 30.0 C and 0.954 atm. Problem 50E: Which is denser at the same temperature and pressure, dry air or air saturated with water vapor?... Problem 51E: A cylinder of O2(g) used in breathing by emphysema patients has a volume of 3.00 L at a pressure of... Problem 52E: What is the molar mass of a gas if 0.0494 g of the gas occupies a volume of 0.100 L at a temperature... Problem 53E: What is the molar mass of a gas if 0.281 g of the gas occupies a volume of 125 mL at a temperature... Problem 54E: How could you show experimentally that the molecular formula of propene is C3H6, not CH2? Problem 55E: The density of a certain gaseous fluoride of phosphorus is 3.93 g/L at STP. Calculate the molar mass... Problem 56E: Consider this question: What is the molecular formula of a compound that contains 39% C. 45% N, and... Problem 57E: A 36.0—L cylinder of a gas used for calibration of blood gas analyzers in medical laboratories... Problem 58E: A cylinder of a gas mixture used for calibration of blood gas analyzers in medical laboratories... Problem 59E: A sample of gas isolated from unrefined petroleum contains 90.0% CH4, 8.9% C2H6, and 1.1% C3H8 at a... Problem 60E: A mixture of 0.200 g of 1.00 g of and 0.820 g of Ar is stored in a closed container at STP. Find the... Problem 61E: Most mixtures of hydrogen gas with oxygen gas are explosive. However, a mixture that contains less... Problem 62E: A commercial mercury vapor analyzer can detect in air, concentrations of gaseous Hg atoms (which are... Problem 63E: A sample of carbon monoxide was collected over water at a total pressure of 756 torr and a... Problem 64E: In an experiment in a general chemistry laboratory, a student collected a sample of a gas over... Problem 65E: Joseph Priestley first prepared pure oxygen by heating mercuric oxide, HgO: 2HgO(s)2Hg(l)+O2(g) (a)... Problem 66E: Cavendish prepared hydrogen in 176G by the novel method of passing steam through a red-hot gun... Problem 67E: The chlorofluorocarbon CCl2F2 can be recycled into a different compound by reaction with hydrogen to... Problem 68E: Automobile air bags are inflated with nitrogen gas, which is formed by the decomposition of solid... Problem 69E: Lime, CaO, is produced by heating calcium carbonate, CaCO3 : carbon dioxide is the other product.... Problem 70E: Before small batteries were available, carbide lamps were used for bicycle lights. Acetylene gas.... Problem 71E: Calculate the volume of oxygen required to burn 12.00 L of ethane gas, C2H6, to produce carbon... Problem 72E: What volume of O2 at STP is required to oxidize 8.0 L of NO at SW to NO2? What volume of NO2 is... Problem 73E: Consider the following questions: (a) What is the total volume of the CO2(g) and H2O(g) at 600 C and... Problem 74E: Methanol, CH3OH, is produced industrially by the following reaction:... Problem 75E: What volume of oxygen a 423.0 K and a pressure of 127.4 kPa is produced by the decomposition of... Problem 76E: A 230-L sample of a colorless gas at STP decomposed to give 230 L of N2 and 1.25 L of O2 at STP.... Problem 77E: Ethanol, C2H5OH, is produced industrially from ethylene, C2H4, by the following sequence of... Problem 78E: One molecule of hemoglobin will combine with four molecules of oxygen. If 1.0 g of hemoglobin... Problem 79E: A sample of a compound of xenon and fluorine was confined in a bulb with a pressure of 18 tor.... Problem 80E: One method of analyzing amino acids is the van Slyke method. The characteristic amino groups (NH2)... Problem 81E: A balloon filled with helium gas is found to take 6 hours to deflate to 50% of its original volume.... Problem 82E: Explain why the numbers of molecules are not identical in the left- and tight-hand bulbs shown in... Problem 83E: Starting with the definition of rate of effusion and Graham’s finding relating rate and molar mass,... Problem 84E: Heavy water, D2O (molar mass = 20.03 g mol-1). can be separated from ordinary water, H2O (molar mass... Problem 85E: Which of the following gases diffuse more slowly than oxygen? F2,Ne,N2O,C2H2,NO,Cl2,H2S Problem 86E: During the discussion of gaseous diffusion for enriching uranium, it was claimed that 235UF6... Problem 87E: Calculate the relative rate of diffusion of 1H2 (molar mass 2.0 gmol) compared to that of 2H2 (molar... Problem 88E: A gas of unknown identity diffuses at a rate of 83.3 mL/s in a diffusion apparatus in which carbon... Problem 89E: When two cotton plugs. one moistened with ammonia and the other with hydrochloric acid, are... Problem 90E: Using the postulates of the kinetic molecular theory, explain why a gas uniformly fills a container... Problem 91E: Can the speed of a given molecule in a gas double at constant temperature? Explain your answer. Problem 92E: Describe what happens o the average kinetic energy of ideal gas molecules when the conditions are... Problem 93E: The distribution of molecular velocities in a sample of helium is shown in Figure 9.34. If the... Problem 94E: What is the ratio of the average kinetic energy of a SO2 molecule to that of an O2 molecule in a... Problem 95E: A 1-L sample of CO initially at STP is heated to 546 K. and its volume is increased to 2 L. (a) What... Problem 96E: The root mean square speed of H2, molecules at 25 C is about 1.6 km/s. What is the root mean square... Problem 97E: Answer the following questions: (a) Is the pressure of the gas in the hot air balloon shown at the... Problem 98E: Show that the ratio of the rate of diffusion of Gas 1 to the rate of diffusion of Gas 2, R1R2, is... Problem 99E: Graphs showing the behavior of several different gases follow. Which of these gases exhibit behavior... Problem 100E: Explain why the plot of PV for CO2 differs from that of an ideal gas. Problem 101E: Under which of the following sets of conditions does a real gas behave most like an ideal gas, and... Problem 102E: Describe the factors responsible for the deviation of the behavior of real gases from that of an... Problem 103E: For which of the following gases should the correction for the molecular volume be largest:... Problem 104E: A 0.245-L flask contains 0.467 mol CO2 at 159 C. Calculate the pressure: (a) using the ideal gas law... Problem 105E: Answer the following questions: (a) If XX behaved as an ideal gas, what would its graph of Z vs. P... format_list_bulleted
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