Name: Jun VoDate: 0 /LL242 130ACP Gases QuizMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.C 1) Identify the statement that is not part of the kinetic-molecular theory.a. Gases consist of molecules in continuous, random motion. xb. Attractive and repulsive forces between gas molecules are negligible.xAtoms are neither created nor destroyed by ordinary chemical reactions.d. The volume occupied by all of the gas molecules in a container is negligible compared to thevolume of the container.D 2 )Collisions between gas molecules do not result in the loss of energy.A sample of He gas (2.35 mol) occupies 57.9 L at 300.0 K and 1.00 atm. The volume of thissample is_L at 423 K and 1.00 atm.E 3 )a. 0.709b. 57.9c. 41.1d. 81.6e. 1.41A pressure of 1.25 atm is the same as a pressure ofmm Hg.a.29.9b. 760.C. 33.0d. 193(e!) 950.A 4)A balloon originally had a volume of 4.39 L at 44 C and a pressure of 729 mm Hg. The balloonmust be cooled toC to reduce its volume to 3.78 L (at constant pressure).0.00b. 72.9C. 546d. 273 ( K38.012 5 )A gas at a pressure of 325 mm Hg exerts a force ofN on an area of 5.5 m.a.1.8 x 103C. 59e. 0.018N2.4 x 105.d. 2.4m 2The van der Waals equation for real gases recognizes that thea. gas particles have non-zero volumes and interact with each otherb. non-zero volumes of gas particles decrease the amount of “empty space” between themC .molar volumes of gases of different types are differenta.)molecular attractions between particles of gas decreases the pressure exerted by the gasall of the above statements are trueArrange the following gases in order of increasing average molecular speed at 25 .C:He, O2, CO2, N2.CO2 < He < N2 < O2c. He < O2 < N2 < CO2e. He < N2 < 02 < CO2b.CO2 < N2 < 02 < Hed. CO2 < 02 < N2 < He( 8 )Of the following gases,has a density of 2.104 g/L at 303 K and 1.31 atm.a.NeE “)b. He(C.) Ard. Kre. XeZinc reacts with aqueous sulfuric acid to form hydrogen gas: Zn(s) + H2SO4(aq) – ZnSO4(aq) + H2(g)In an experiment, 225 mL of wet H2 is collected over water at 27C and a barometric pressure of 748mm Hg. How many grams of Zn have been consumed? The vapor pressure of water at 27 C is 26.74mm Hg.a. 567b. 4.79 x 106c. 4.31 x 105d. 431( 10) Since air is a mixture, it does not have a “molar mass.” However, it is possible to speak of itse. ) 0.567″effective molar mass.” (An effective molar mass is a weighted average of the molar masses of amixture’s components.) If air at STP has a density of 1.285 g/L, its effective molar mass isa. 31.49b. 30.00g/mol,C. 26.94d)28.80e. 34

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