Chemistry Atoms First2e
2nd Edition
ISBN: 9781947172647
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 8, Problem 50E
Which is denser at the same temperature and pressure, dry air or air saturated with water vapor? Explain.
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For many purposes we can treat propane (C,H3)
as an ideal gas at temperatures above its boiling point of -42. C.
Suppose the temperature of a sample of propane gas is raised from -30.0 °C to -6.0 °C, and at the same time the pressure is decreased by 10.0%.
increase
Does the volume of the sample Increase, decrease, or stay the same?
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1.) A 15.0-L tank is filled with H2 to a pressure of 2.00 x 102 atm. How many balloons (each 2.00 L) can be inflated to a pressure of 1.00 atm from the tank? Assume that there is no temperature change and that the tank cannot be emptied below 1.00 atm pressure. 2.) A sample of air occupies 1.0 L at 25 °C and 1.00 atm. What pressure is needed to compress it to 100 cm3 at this temperature? 3.) Could 131 g of xenon gas in a vessel of volume 1.0 L exert a pressure of 20 atm at 25 °C if it behaved as a perfect gas? If not, what pressure would it exert? 4.) A perfect gas undergoes isothermal compression, which reduces its volume by 2.20 L. The final pressure and volume of the gas are 3.78 x 103 Torr and 4.65 L, respectively. Calculate the original pressure of the gas in a. Torr and b. atm. 5.) The density of a gaseous compound was found to be 1.23 kg m-3 at 330 K and 20 kPa. What is the molar mass of the compound?
For many purposes we can treat nitrogen (N2) as an ideal gas at temperatures above its boiling point of -196.C. Suppose the temperature of a sample of nitrogen gas is raised from -88.0C to -79.0C, and at the same time the pressure is decreased by 10%. Does the volume of the sample increase, decrease or stay the same? Calculate the percentage change in the volume. Round your answer to the nearest percent?
Chapter 8 Solutions
Chemistry Atoms First2e
Ch. 8 - Why are sharp knives more effective than dull...Ch. 8 - Why do some small bridges have weight limits that...Ch. 8 - Why should you roll or belly-crawl rather than...Ch. 8 - A typical barometric pressure in Redding....Ch. 8 - A typical barometric pressure in Denver, Colorado,...Ch. 8 - A typical barometric pressure in Kansas City is...Ch. 8 - Canadian tire pressure gauges are marked in units...Ch. 8 - Dining the Viking landings on Mars, the...Ch. 8 - The pressure of the atmosphere on the surface of...Ch. 8 - A medical laboratory catalog describes the...
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A balloon with a volume of 100.21 L at 21 C and...Ch. 8 - If the temperature of a fixed amount of a gas is...Ch. 8 - If the volume of a fixed amount of a gas is...Ch. 8 - What is the density of laughing gas, dinitrogen...Ch. 8 - Calculate the density of Freon 12, CF2Cl2, at 30.0...Ch. 8 - Which is denser at the same temperature and...Ch. 8 - A cylinder of O2(g) used in breathing by patients...Ch. 8 - What is the molar mass of a gas if 0.0494 g of the...Ch. 8 - What is the molar mass of a gas if 0.281 g of the...Ch. 8 - How could you show experimentally that the...Ch. 8 - The density of a certain gaseous fluoride of...Ch. 8 - Consider this question: What is the molecular...Ch. 8 - A 36.0—L cylinder of a gas used for calibration of...Ch. 8 - A cylinder of a gas mixture used for calibration...Ch. 8 - A sample of gas isolated from unrefined petroleum...Ch. 8 - A mixture of 0.200 g of 1.00 g of and 0.820 g of...Ch. 8 - Most mixtures of hydrogen gas with oxygen gas are...Ch. 8 - A commercial mercury vapor analyzer can detect in...Ch. 8 - A sample of carbon monoxide was collected over...Ch. 8 - In an experiment in a general chemistry...Ch. 8 - Joseph Priestley first prepared pure oxygen by...Ch. 8 - Cavendish prepared hydrogen in 176G by the novel...Ch. 8 - The chlorofluorocarbon CCl2F2 can be recycled into...Ch. 8 - Automobile air bags are inflated with nitrogen...Ch. 8 - Lime, CaO, is produced by heating calcium...Ch. 8 - Before small batteries were available, carbide...Ch. 8 - Calculate the volume of oxygen required to burn...Ch. 8 - What volume of O2 at STP is required to oxidize...Ch. 8 - Consider the following questions: (a) What is the...Ch. 8 - Methanol, CH3OH, is produced industrially by the...Ch. 8 - What volume of oxygen a 423.0 K and a pressure of...Ch. 8 - A 230-L sample of a colorless gas at STP...Ch. 8 - Ethanol, C2H5OH, is produced industrially from...Ch. 8 - One molecule of hemoglobin will combine with four...Ch. 8 - A sample of a compound of xenon and fluorine was...Ch. 8 - One method of analyzing amino acids is the van...Ch. 8 - A balloon filled with helium gas takes 6 hours to...Ch. 8 - Explain why the numbers of molecules are not...Ch. 8 - Starting with the definition of rate of effusion...Ch. 8 - Heavy water, D2O (molar mass = 20.03 g mol-1). can...Ch. 8 - Which of the following gases diffuse more slowly...Ch. 8 - During the discussion of gaseous diffusion for...Ch. 8 - Calculate the relative rate of diffusion of...Ch. 8 - A gas of unknown identity diffuses at a rate of...Ch. 8 - When two cotton plugs. one moistened with ammonia...Ch. 8 - Using the postulates of the kinetic molecular...Ch. 8 - Can the speed of a given molecule in a gas double...Ch. 8 - Describe what happens o the average kinetic energy...Ch. 8 - The distribution of molecular velocities in a...Ch. 8 - What is the ratio of the average kinetic energy of...Ch. 8 - A 1-L sample of CO initially at STP is heated to...Ch. 8 - The root mean square speed of H2, molecules at 25...Ch. 8 - Answer the following questions: (a) Is the...Ch. 8 - Show that the ratio of the rate of diffusion of...Ch. 8 - Graphs showing the behavior of several different...Ch. 8 - Explain why the plot of PV for CO2 differs from...Ch. 8 - Under which of the following sets of conditions...Ch. 8 - Describe the factors responsible for the deviation...Ch. 8 - For which of the following gases should the...Ch. 8 - A 0.245-L flask contains 0.467 mol CO2 at 159 C....Ch. 8 - Answer the following questions: (a) If XX behaved...
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