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| A device for measuring atmospheric pressure. |
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| Also called the torr; a unit of pressure. |
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| Another name for mm Hg; named after Torricelli. |
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| A unit of measurement for pressure equal to 760mm Hg or 101,325 Pa. |
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| The SI unit of measurement for pressure; equal to one newton per square meter. |
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| The volume of given samples of gas at constant temperature varies inversely with the pressure. |
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| Matter cannot be cooled to temperature lower than -273 degrees Celsius. |
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| The volume of given samples of gas at constant pressure is directly proportional to the temperature in Kelvins. |
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Definition
| Equal volumes of gas at the same temperature & pressure contain the same number of particles (atoms or molecules). |
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| The combined proportionality constant in the ideal gas law. |
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| An equation relating the properties of an ideal gas, expressed as PV=nRT, where P=pressure, V=volume, n=moles of the gas, R=universal gas constant, & T=temperature in Kelvins. This equation expresses behavior closely approached by real gases at high temperatures &/or low pressure. |
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Definition
| A hypothetical gas that exactly obeys the ideal gas law. A real gas approaches ideal behavior at high temperature &/or low pressure. |
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| A rearrangement of the ideal gas law based on constants. |
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| The independent pressure exerted by different gases in a mixture. |
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| Dalton's Law of Partial Pressures |
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Definition
| For a mixture of gases in a container, the total pressure exerted is the sum of the pressures each gas would exert if alone. |
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Definition
| A model that assumes that an ideal gas is composed of tiny particles in constant motion. |
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