Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Chapter 9, Problem 96E
The root mean square speed of
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Chapter 9 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 9 - Why are sharp knives more effective than dull...Ch. 9 - Why do some small bridges have weight limits that...Ch. 9 - Why should you roll or belly-crawl rather than...Ch. 9 - A typical barometric pressure in Redding....Ch. 9 - A typical barometric pressure in Denver, Colorado,...Ch. 9 - A typical barometric pressure in Kansas City is...Ch. 9 - Canadian tire pressure gauges are marked in units...Ch. 9 - Dining the Viking landings on Mars, the...Ch. 9 - The pressure of the atmosphere on the surface of...Ch. 9 - A medical laboratory catalog describes the...
Ch. 9 - Consider this scenario and answer the following...Ch. 9 - Why is it necessary to use a nonvolatile liquid in...Ch. 9 - The pressure of a sample of gas is measured at sea...Ch. 9 - The pressure of a sample of gas is measured with...Ch. 9 - The pressure of a sample of gas is measured at sea...Ch. 9 - The pressure of a sample of gas ¡s measured a sea...Ch. 9 - How would the use of a volatile liquid affect the...Ch. 9 - Sometimes leaving a bicycle in the sun on a hot...Ch. 9 - Explain how the volume of the bubbles exhausted by...Ch. 9 - One way to state Boyle’s law is All other things...Ch. 9 - An alternate way to state Avogadro’s law is A1l...Ch. 9 - How would the graph in Figure 9.12 change if the...Ch. 9 - How would the graph in Figure 9.13 change if the...Ch. 9 - In addition to the data found in Figure 9.13, what...Ch. 9 - Determine the volume of 1 mol of CH4 gas at 150 K...Ch. 9 - Determine the pressure of the gas in the syringe...Ch. 9 - A spray can is used until it is empty except for...Ch. 9 - What is the temperature of an 11.2-L sample of...Ch. 9 - À 2.50-L volume of hydrogen measured at —196 C is...Ch. 9 - A balloon inflated with three breaths of air has a...Ch. 9 - A weather balloon contains 8.80 moles of helium at...Ch. 9 - The volume of an automobile air bag was 66.8 L...Ch. 9 - How many moles of gaseous boron trifluoride, BF3,...Ch. 9 - Iodine, I2, is a solid at room temperature but...Ch. 9 - How many grams of gas are present in each of the...Ch. 9 - A high altitude balloon is filled with 1041104 L...Ch. 9 - A cylinder of medical oxygen has a volume of 3S.4...Ch. 9 - A large scuba tank (Figure 9.16) with a volume of...Ch. 9 - A 20.0-L cylinder containing 11.34 kg of butane,...Ch. 9 - While resting, the average 70-kg human male...Ch. 9 - For a given amount of gas showing ideal behavior,...Ch. 9 - A liter of methane gas, CH4, at STP contains more...Ch. 9 - The effect of chlorofluorocarbons (such as CCl2F2)...Ch. 9 - As 1 g of (lie radioactive element radium decays...Ch. 9 - A balloon that is 100.21 L at 21 C and 0.981 atm...Ch. 9 - If the temperature of a fixed amount of a gas is...Ch. 9 - If the volume of a fixed amount of a gas is...Ch. 9 - What is the density of laughing gas, dinitrogen...Ch. 9 - Calculate the density of Freon 12, CF2Cl2, at 30.0...Ch. 9 - Which is denser at the same temperature and...Ch. 9 - A cylinder of O2(g) used in breathing by emphysema...Ch. 9 - What is the molar mass of a gas if 0.0494 g of the...Ch. 9 - What is the molar mass of a gas if 0.281 g of the...Ch. 9 - How could you show experimentally that the...Ch. 9 - The density of a certain gaseous fluoride of...Ch. 9 - Consider this question: What is the molecular...Ch. 9 - A 36.0—L cylinder of a gas used for calibration of...Ch. 9 - A cylinder of a gas mixture used for calibration...Ch. 9 - A sample of gas isolated from unrefined petroleum...Ch. 9 - A mixture of 0.200 g of 1.00 g of and 0.820 g of...Ch. 9 - Most mixtures of hydrogen gas with oxygen gas are...Ch. 9 - A commercial mercury vapor analyzer can detect in...Ch. 9 - A sample of carbon monoxide was collected over...Ch. 9 - In an experiment in a general chemistry...Ch. 9 - Joseph Priestley first prepared pure oxygen by...Ch. 9 - Cavendish prepared hydrogen in 176G by the novel...Ch. 9 - The chlorofluorocarbon CCl2F2 can be recycled into...Ch. 9 - Automobile air bags are inflated with nitrogen...Ch. 9 - Lime, CaO, is produced by heating calcium...Ch. 9 - Before small batteries were available, carbide...Ch. 9 - Calculate the volume of oxygen required to burn...Ch. 9 - What volume of O2 at STP is required to oxidize...Ch. 9 - Consider the following questions: (a) What is the...Ch. 9 - Methanol, CH3OH, is produced industrially by the...Ch. 9 - What volume of oxygen a 423.0 K and a pressure of...Ch. 9 - A 230-L sample of a colorless gas at STP...Ch. 9 - Ethanol, C2H5OH, is produced industrially from...Ch. 9 - One molecule of hemoglobin will combine with four...Ch. 9 - A sample of a compound of xenon and fluorine was...Ch. 9 - One method of analyzing amino acids is the van...Ch. 9 - A balloon filled with helium gas is found to take...Ch. 9 - Explain why the numbers of molecules are not...Ch. 9 - Starting with the definition of rate of effusion...Ch. 9 - Heavy water, D2O (molar mass = 20.03 g mol-1). can...Ch. 9 - Which of the following gases diffuse more slowly...Ch. 9 - During the discussion of gaseous diffusion for...Ch. 9 - Calculate the relative rate of diffusion of 1H2...Ch. 9 - A gas of unknown identity diffuses at a rate of...Ch. 9 - When two cotton plugs. one moistened with ammonia...Ch. 9 - Using the postulates of the kinetic molecular...Ch. 9 - Can the speed of a given molecule in a gas double...Ch. 9 - Describe what happens o the average kinetic energy...Ch. 9 - The distribution of molecular velocities in a...Ch. 9 - What is the ratio of the average kinetic energy of...Ch. 9 - A 1-L sample of CO initially at STP is heated to...Ch. 9 - The root mean square speed of H2, molecules at 25...Ch. 9 - Answer the following questions: (a) Is the...Ch. 9 - Show that the ratio of the rate of diffusion of...Ch. 9 - Graphs showing the behavior of several different...Ch. 9 - Explain why the plot of PV for CO2 differs from...Ch. 9 - Under which of the following sets of conditions...Ch. 9 - Describe the factors responsible for the deviation...Ch. 9 - For which of the following gases should the...Ch. 9 - A 0.245-L flask contains 0.467 mol CO2 at 159 C....Ch. 9 - Answer the following questions: (a) If XX behaved...
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- Given that a sample of air is made up of nitrogen, oxygen, and argon in the mole fractions 0.78 N2, 0.21 O2, and 0.010 Ar, what is the density of air at standard temperature and pressure?arrow_forwardGiven that a sample of air is made up of nitrogen, oxygen, and argon in the mole fractions 0.78 N2, 0.21 O2, and 0.010 Ar, what is the density of air at standard temperature and pressure?arrow_forwardA 1-L sample of CO initially at STP is heated to 546 K. and its volume is increased to 2 L. (a) What effect do these changes have on the number of collisions of the molecules of the gas per unit area of the container wall? (b) What is the effect on the average kinetic energy of the molecules? (c) What is the effect on the root mean square speed of the molecules?arrow_forward
- The density of air at 20C and 1.00 atm is 1.205 g/L. If this air were compressed at the same temperature to equal the pressure at 50.0 m below sea level, what would be its density? Assume the barometric pressure is constant at 1.00 atm. The density of seawater is 1.025 g/cm3.arrow_forwardYou have two pressure-proof steel cylinders of equal volume, one containing 1.0 kg of CO and the other containing 1.0 kg of acetylene, C2H2. (a) In which cylinder is the pressure greater at 25 C? (b) Which cylinder contains the greater number of molecules?arrow_forwardOne of the chemical controversies of the nineteenth century concerned the element beryllium (Be). Berzelius originally claimed that beryllium was a trivalent element (forming Be3+ ions) and that it gave an oxide with the formula Be2O3. This resulted in a calculated atomic mass of 13.5 for beryllium. In formulating his periodic table, Mendeleev proposed that beryllium was divalent (forming Be2+ ions) and that it gave an oxide with the formula Be2O3. This assumption gives an atomic mass of 9.0. In 1894, A. Combes (Comptes Rendus 1894, p. 1221) reacted beryllium with the anion C5H7O2and measured the density of the gaseous product. Combess data for two different experiments are as follows: I II Mass 0.2022 g 0.2224 g Volume 22.6 cm3 26.0 cm3 Temperature 13C 17C Pressure 765.2 mm Hg 764.6 mm If beryllium is a divalent metal, the molecular formula of the product will be Be(C5H7O2)2; if it is trivalent, the formula will be Be(C5H7O2)3. Show how Combess data help to confirm that beryllium is a divalent metal.arrow_forward
- How would the use of a volatile liquid affect the measurement of a gas using open-ended manometers vs. closed-end manometers?arrow_forwardIn the discussion on the composition of air, mention is made of the fact that water vapor may have a concentration as high as 40,000 ppm. Calculate the partial pressure exerted by water vapor at this concentration. Assume that this represents a situation with 100% humidity. What temperature would be needed to achieve this value? (See Appendix G.)arrow_forwardYou have an equimolar mixture of the gases SO2 and O2, along with some He, in a container fitted with a piston. The density of this mixture at STP is 1.924 g/L. Assume ideal behavior and constant temperature and pressure. a. What is the mole fraction of He in the original mixture? b. The SO2 and O2 react to completion to form SO3. What is the density of the gas mixture after the reaction is complete?arrow_forward
- A sample of a smoke stack emission was collected into a 1.25-L tank at 752 mm Hg and analyzed. The analysis showed 92% CO2, 3.6% NO, 1.2% SO2, and 4.1% H2O by mass. What is the partial pressure exerted by each gas?arrow_forwardWhat is the ratio of the average kinetic energy of a SO2 molecule to that of an O2 molecule in a mixture of two gases? What is the ratio of the root mean square speeds, urms, of the two gases?arrow_forward5-114 Carbon dioxide gas, saturated with water vapor, can be produced by the addition of aqueous acid to calcium carbonate based on the following balanced net ionic equation: (a) How many moles of wet CO (g), collected at 60.°C and 774 torr total pressure, are produced by the complete reaction of 10.0 g of CaCO3 with excess acid? (b) What volume does this wet CO2 occupy? (c) What volume would the CO2 occupy at 774 torr if a desiccant (a chemical drying agent) were added to remove the water? The vapor pressure of water at 60.°C is 149.4 mm Hg.arrow_forward
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