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Unit 8

Gases

TermDefinition
Pressure force per unit area on a surface
Newton force that will increase the speed of a one-kilogram mass by one mps each second that the force is applied
Barometer device used to measure atmospheric pressure
Millimeters of Mercury the common unite of pressure, symbolized mm Hg
Atmosphere of Pressure exactly equivalent to to 760mm Hg
Pascal pressure exerted by a force of one newton acting on an area of one square meter
Partial Pressure the pressure of each gas in a mixture
Dalton's law of partial pressure the total pressure of a gas mixture is the sum of the partial pressures of the component gases
Boyles Law the volume of a fixed mass of gas varies inversely with the pressure at constant temperature
Absolute Zero the lowest possible achievable temperature
Charle's law the volume of a fixed mass of gas varies directly with the temperature in kelvins
Gay-Lussac's law the pressure of a fixed mass of gas at constant volume varies directly with the temp in kelvin
Combined gas law expresses the relationship between pressure volume, and temp of a fixed amount of gas
Avogadro's law equal volumes of gases at the same temp and pressure contain equal numbers of molecules
Standard molar volume of a gas the volume occupied by one mole of a gas at STP, being 22.414 10L
ideal gas law is the mathematical relationship among pressure, volume, temp, and the number of moles of a gas
ideal gas constant representing the ideal gas law, the constant R
Graham's law of effusion the rates of effusion of gases at the same temp and pressure are inversely proportional to the square roots of thier molar mass
Created by: tvt
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