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23 Cards in this Set
- Front
- Back
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Pressure
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Force per unit
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Pascals
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SI unit for pressure
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Standard Atmospheric pressure
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dinfined as 760 torr
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Atmoshere
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a unit of pressure equal to 760 Torr
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Torr
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a unit of pressure
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Boyle's Law
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A law stating that at constant temperature the product of the volume and pressure of a given amount
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Charle's Law
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a law stating that a constant pressure, the volume of a given quanity of gas is proportional to absolute temperature
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Avogadro's Hypothesis
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a statement that equal volumes of gases at the samideal gas e temparture and pressure contain equal number of molecules
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Avogadro's Law
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a statement that the volume of a gas maintained at a constant temperature is directy proportional to the the number of moles of the gas
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ideal-gas equation
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PV=nRT
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Ideal Gas
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a hypothetical gas whose pressure, volume, and temperature behavior is completely described by the ideal gas equation
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Gas constant
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the constant in PV=nRT (R)
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Standard Temperature and pressure
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defined as 0 degrees C and at 1 atm frequently used as a refernce for gases
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partial pressure
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pressure exerted by a particular gas in a mixture
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Dalton's law of partial Pressure
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a law stating that the total pressure by a of a mixture of gases is the sum of the pressure that each gas would exert if it were present alone
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mole fraction
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ratio of moles of one componet of a mixture to the total moles of all componets
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kinetic-molecular theory
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a saet of assumptions about the nature of gases. These assumptions, when translatedinto mathmatical form, yeild the ideal-gas equation
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root--mean-square (rms) speed
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the square root of the average of the squared speeds of the gase molcules in a gase sample
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effusion
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the escape of gas through an orfice or hole
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Graham's law
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a law stating that the rate of effusion of a gas is inversely proportional to the square root of it's molecular weight
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diffusion
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the spreading of one substances through a space occupied by one or more other substances
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mean free path
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the average distance traveled by a gas molecule between collisions
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van der Waals equation
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an equation of state for nonideal gases that is based on adding corrections to the ideal-gas equation the correction terms account for intermolcular forces of attraction and for the volume occupied by the gas molecules themselves
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