Term
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Definition
| A unit of pressure equal to 760 torr; 1 atm = 101.325 kPa. |
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Definition
| A statement that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. |
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Term
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Definition
| A statement that the volume of a gas maintained at a constant temperature and pressure is directly proportional to the number of moles of the gas. |
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Definition
| A united of pressure equal to 105 Pa. |
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Term
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Definition
| A law stating that at constant temperature, the product of the volume and pressure of a given amount of has is a constant. |
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Term
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Definition
| A law stating that at constant pressure, the volume of a given quantity of gas is proportional to absolute temperature. |
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Term
| Dalton’s Law of Partial Pressures |
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Definition
| A law stating that the total pressure of a mixture of gasses is the sum of the pressures that each gas would exert if it were present alone. |
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Term
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Definition
| The spreading of one substance through a space occupied by one or more other substances. |
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Term
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Definition
| The escape of a gas through an orifice or hole. |
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Term
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Definition
| The constant of proportionality in the ideal-gas equation. |
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Term
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Definition
| A law stating that the rate of effusion of a gas is inversely proportional to the square root of its molecular weight. |
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Term
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Definition
| A hypothetical gas whose pressure, volume, and temperature behavior is completely described by the ideal-gas equation. |
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Term
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Definition
| An equation of state for gases that embodies Boyke’s law, Charles’s law, and Avogadro’s Hypothesis in the form PV = nRT. |
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Term
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Definition
| A set of assumptions about the nature of gasses. These assumptions when translated into mathematical form, yield the ideal-gas equation. |
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Term
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Definition
| The average distances traveled by a gas molecule between collisions. |
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Term
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Definition
| The ratio of the number of moles of one component of a mixture to the total moles of all components; abbreviated X, with a subscript to identify the component. |
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Term
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Definition
| The pressure exerted by a particular gas in a mixture. |
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Term
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Definition
| The SI unit of pressure: 1 Pa = 1N/m2. |
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Term
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Definition
| A measure of the force exerted on a unit area. In chemistry, pressure is often expressed in unites of atmospheres (atm) or torr; 760 Torr = 1 atm; in SI units pressure is expressed in pascals. |
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Term
| Root-mean-square (rms) Speed (μ) |
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Definition
| The square root of the average of the squared speeds of the gas molecules in a gas sample. |
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Term
| Standard Atmospheric Pressure |
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Definition
| Defined as 760 torr or, in SI units, 101.325 kPa. |
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Term
| Standard Temperature and Pressure |
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Definition
| Defined as 0oC and 1 atm pressure; frequently used as reference conditions for a gas. |
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Term
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Definition
| A unit of pressure (1 torr = 1 mm Hg). |
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Term
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Definition
| An equation of state for nonideal gases that is based on adding corrections to the ideal-gas equations. The correction terms account for intermolecular foreces of attraction and for the volumes occupied by the gas molecules themselves. |
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Term
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Definition
| Gaseous state of any substance that normally exists as a liquid or solid. |
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