# Gas Laws Review 2: Question Preview (ID: 14200)

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 When Gay-Lussac's law of combining volumes holds, which of the following can be expressed in ratios of small whole numbers? a) pressure before and pressure after reaction b) volumes of gaseous reactants and products c) temperature of gaseous reactants and products d) molar masses of products and reactants The principle that under similar pressures and temperatures, equal volumes of gases contain the same number of molecules is attributed to a) Boyle b) Graham c) Avogadro d) Dalton Equal volumes of diatomic gases under the same conditions of temperatures and pressure contain the same number of a) protons b) ions c) molecules d) electrons The standard molar volume of a gas at STP is a) 22.4 L b) g/22.4 L c) g-mol wt./22.4 L d) 1 L When pressure, volume, and temperature are known, the ideal gas law can be used to calculate a) the chemical formula b) the ideal gas constant c) molar amount d) rate of effusion What is the value of the gas constant? a) 0.0821 L*atm/mol*K b) 0.281 L*atm c) 0.0281 L*atm/mol*K d) 0.0821 mol*K Calculate the approximate volume of a 0.600 mol sample of gas at 15.0 degrees C and a pressure of 1.10 atm. a) 12.9 L b) 22.4 L c) 24.6 L d) 139 L Why can you smell perfume throughout a room after you spray it in one section of the room? a) It is dense b) It diffuses c) It is compressed d) It condenses When gas molecules randomly encounter and pass through a small opening in a container this is known as a) diffusion b) vaporization c) distillation d) effusion What determines the average kinetic energy of the molecules of any gas? a) Pressure b) Temperature and Pressure c) Temperature d) Molar Mass
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