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unit 8 gases
Term | Definition |
---|---|
pressure | pressure is defined as the force per unit area on a surface |
newton | the newton is the force that will increase the speed of a one-kilogram mass by one meter per second each second that the force is applied |
barometer | a device used to measure atmospheric presssure |
millimeter of mercury | the common unit of pressure |
atmosphere of pressure | defined as being exactly equivalent to 760 mm Hg |
pascal | the SI unit of pressure ; equal to the force of 1 N exerted over an area of 1 m2 |
partial pressure | the pressure of each gas in a mixture |
Dalton law of partial pressure | the law that states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases |
Boyle's law | states that the volume of a fixed mass of gas varies inversely with the pressure at constant temperature |
absolute zero | the lowest possible achievable temperature is assigned the value of zero on the Kevin temperature scale |
Charles's Law | states that the volume of a fixed mass of gas at constant pressure 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 temperature in kelvins |
combined gas law | expresses the relationship between pressure, volume, and temperature of a fixed amount of gas |
Avogadro Law | states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules |
standard molar volume of a gas | it has been found to me 22.414 10 L |
ideal gas law | the mathematical relationship among pressure, volume, temperature, and the number of moles of a gas |
ideal gas constant | its value depends on the units chosen for pressure, volume, and temperature |
Graham's law of effusion | states that the rates of effusion of gases at the same temperature and pressure are inversely proportional to the square roots of their molar masses |