PPT-Introduction to Gases

Chemistry2 nd semester Properties All gases share some physical properties Pressure P Volume V Temperature T Number of moles n These properties combine to describe the behavior of gases using the gas laws. The most reactive of these gases are chlorine monoxide ClO bromine monoxide BrO and chlorine and bromine atoms Cl and Br These gases participate in three prin cipal reaction cycles that destroy ozone Cycle 1 Ozone destruction Cycle 1 is illustrated 24 tratospheric ozone is destroyed by reactions involving reactive halogen gases which are produced in the chemi cal conversion of halogen source gases see Figure Q81 57374e most reactive of AL LHOCK WAVES CSCL 20D Unclas ASA H112 32570 VELOCITY LAG OF SOLID PARTICLES IN OSCILLATING GASES AND IN GASES PASSING THROUGH NORMAL SHOCK WAVES by Barry R Maxwell and Richard G Seasholtz Lewis Research Center Cleveland Ohio 44135 NATIONAL AERONAU Introduction . Air pollution control can be generally described as a “. separation. ” technology. .. The pollutants, whether they are gaseous, aerosol, or solid particulate, are separated from a carrier gas, which is usually air. Diffusion plus Convection. ).  . Molecular Diffusion in Gases. Equimolar. . Counterdiffusion. A. B. B. A.  .  . In terms of mole fraction, . Molecular Diffusion in Gases. Uni. -component Diffusion. Microscopic to Macroscopic. Macroscopic vs. Microscopic. Macroscopic means from the big picture or from far away.. This means what we can see with the naked eye.. Microscopic means from close up or on a small scale.. The solubility and saturation value for gases in seawater increase as temperature and salinity decrease and as pressure increases.. 1. . Solubility. is the ability of something to be dissolved and go into solution.. ATS 150. Lecture 5. Please read Chapter 4 . in Archer Textbook. Gases. Gases are made of moving . molecules separated by empty space. Kinetic energy of molecular motion is proportional to temperature . Aziz AlSa’ad-Nasser Alabduljaleel-Abdulkareem AbuTaleb-Aziz AlOthman . 1.3 Vocabulary . Ultraviolet radiation:. rays of light that cannot be seen and that are a little bit shorter than the rays of violet light. The Kinetic-Molecular Theory of Matter. Gases. Behavior of Atoms. Kinetic-molecular theory. .  . based on the idea that particles of matter are always in motion. Can be used to explain the properties of solids, liquids, and gases in terms of the energy of the atoms and the forces that act between them. 4. and CO. 2. ) is dissolved in a catalyst made of palladium (. Pd. ) and zirconium (. Zr. ) to be converted into useful fuel (CO and H. 2. ).. Publication about this research: N. . Köpfle. , T. . Götsch. The particles are far apart.. The particles move very fast.. The particles have no attraction nor repulsion for each other.. The fact that they have no definite shape or volume – they take the shape of the container.. As per BS 6164 in 15.6 section. The hazardous nature of gaseous contaminants in the tunnel atmosphere should be taken into account, as some are toxic, flammable/potentially explosive, radioactive or asphyxiant. It should be recognized that some contaminants display a combination of toxic and potentially explosive properties. It should also be recognized that the monitoring and control of such gases in a tunnel atmosphere can be difficult because the concentrations rarely remain constant throughout a working day.. A strong attraction to each other and a large volume . A strong attraction to each other and no volume . A weak attraction to each other and a large volume . A weak attraction to each other and no volume .