Exam 5: Gases

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A 2.75 L container filled with CO2 gas at 25 °C and 2.25 bar springs a leak.When the container is resealed,the pressure is 1.85 bar and the temperature is 10 °C.How many moles of gas were lost?

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What is the Celsius temperature of 100.0 g of chlorine gas in a 55.0 L container at 1.069 bar?

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Calculate the molecular weight of a gas that has a root mean square velocity of 269 m s-1 at 381 K.

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A mixture of He,Ne,and Ar has a pressure of 7.85 bar.If the Ne has a mole fraction of 0.47 and Ar has a mole fraction of 0.23,what is the pressure of He?

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Convert 29.592 inches Hg to bar.

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If the pressure in a gas container that is connected to an open-end U-tube manometer is 116 kPa and the pressure of the atmosphere at the open end of the tube is 752 mmHg,the level of mercury in the tube will

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Which of the following will cause the volume of an ideal gas to triple in value?

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Which of the following statements is TRUE?

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Determine the density of O3 gas at 341 K and 2.14 bar.

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Rank the following in order of decreasing rate of effusion. F2 \quad SF6 \quad CO \quad Kr

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Which of the gases in the graph below has the smallest molar mass? Which of the gases in the graph below has the smallest molar mass?

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What is the definition of diffusion?

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Calculate the root mean square velocity of molecular hydrogen at 251.0 K.

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Define effusion.

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The density of a gas is 3.12 g L−1\mathrm { L } ^ { - 1 } at STP.What is the gas?

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A 0.600 g sample containing Ag2O and inert material is heated,causing the silver oxide to decompose according to the following equation: 2Ag2O(s)→ 4Ag(s)+ O2(g) If 13.8 mL of gas are collected over water at 27 °C and 1.001 bar external pressure,what is the percentage of silver oxide in the sample? The partial pressure of water is 26.7 mmHg at 27 °C.

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To what volume will a sample of gas expand if it is heated from 50.0 °C and 2.33 L to 500.0 °C?

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Which of the following samples will have the greatest average speed at 355 K?

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The ratio of the rate of effusion of oxygen to an unknown gas is 0.935.What is the other gas?

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Which of the following samples will have the greatest volume at STP?

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