| A | B |
|---|
| barometer | A device for measuring atmospheric pressure. |
| Avogadro's law | V = a n |
| mm Hg | A unit of pressure, also call a torr. |
| torr | Another name for millimeter of mercury (mm Hg). |
| standard atmosphere | A unit of pressure equalt o 760 mm Hg. |
| pascal | The SI unit of pressure; equal to newtons per meter squared. |
| Boyle's law | The volume of a given sample of gas at constant temperature varies inversely with the pressure. |
| ideal gas | A gas that stirctly obeys Boyle's law. |
| Charles's gas | The volume of a given sample of gas at constant pressure is directly proportional to the temperature in kelvins. |
| absolute zero | 0 degrees K or -273.2 degrees C |
| Avogadro's law | Equal volumes of gases at the same temperature and pressure contain the same number of particles. |
| universal gas constant | The combined proportionality constant in the ideal gas law; 0.08206 (L)(atm/K)(mol) or 8.3145 (J/K)(mol) = R |
| ideal gas law | PV = nRT |
| molar volume | The volume of one mole of an ideal gas; equal to 22.42 liters at STP. |
| STP | The condition 0 degrees C and 1 atmosphere of pressure. |
| Dalton's law of partial pressure | For a mixture of gases in a container, the total pressure exerted is the sum of the pressures that each gas would exert if it were alone. Ptotal = P1 + P2 + P3 + ... |
| partial pressure | The independent pressures exerted by different gases in a mixture. |
| mole fraction | The ratio of the number of moles of a given component in a mixture to the total number of moles in the mixture. |
| kinetic molecular theory KMT | A model that assumes that an ideal gas is composed of tiny particles or molecules in constant motion |
| manometer | A device for measuring the pressure of a gas in a container. |
| joule | kg(m^2)/s^2 |
| diffusion | The mixing of gases. |
| effusion | The passage of a gas through a tiny orafice into an evacuated chamber. |
| Graham's law of effusion | The rate of effusion of a gas is inversely proportional to the square root of the mass of its particles. |
| real gas | These gases do not follow the ideal gas law. |
| van der Waals equation | A mathematical expression for describing the behavior of real gases. |
| atmosphere | The mixture of gases that surrounds the earth's surface. |
| air pollution | Contamination of the atmosphere, mainly by the gaseous products of transportation and production of electricity. |
| photochemical smog | Air pollution produced by the action of light on oxygen, nitrogen oxides, and unburned fuel from auto exhaust ot form ozone and other pollutants. |
| root mean square velocity | The square root of the average of the squares of the individual velocities of gas particles. |
| Boyle's law | PV = k or P1V1 = P2V2 or V = k/P |
| Charles's law | V = bT |
| acid rain | The result of air pollution by sulfur dioxide. |
