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19 Cards in this Set
- Front
- Back
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pressure
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force per unit area
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pascals
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how pressure is measured
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bar
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equals 10 the the 5th power Pa
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standard atmospheric pressure
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used to define atmosphere and a torr
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Boyle's law
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for a contant quantity of gas is inversely proportional to the pressure
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charles's law
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for a fixed quantity of gas at contant pressure, the volume is directly proportional to its absolute temperature
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avogadro's hypothesis
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equal volumes of gases at the same temperature and pressure contain equal numbers of molecules
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avagadro's law
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for a gas at contant temperature and pressure, the volum eof the gas is directly proportional to the number of moles of gas
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ideal-gas equation
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PV= nRT
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gas contant
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R in the ideal-gas equation
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standard temperature and pressure
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the conditions of 273 degrees Kelvin and 1 atm
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Dalton's law of partial pressure
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in gas mixtures the total pressure is the sum of partial pressures that each gas would exert if it were present alone under the same conditions
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mole fraction
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the ratio of the moles of one component of a mixture to the total moles of all components
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the kinetic-molecular theory
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accounts for the properties of an ideal gas in terms of a set of statements about the nature of gases
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root-mean-square (rms) speed
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varies in proportion to the square root of the absolute temperature an diversely with the square root of the molar mass
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effusion
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escape through a tiny hole into a vacuum
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diffusion
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the diffusion of one gas through the space occupied by a second gas is another phenomenon related to the speeds at which molecules move
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mean free path
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the mean distance traveled between collisions
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van der waals equation
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an equation of state for gases that modifies the id3eal gas equation to accound for intrinsic molecular volume and itnermolecular forces
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