Exam 11: Gases

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A syringe contains 589 mL of CO at 325 K and 1.2 atm pressure.A second syringe contains 473 mL of N2 at 298 K and 2.6 atm.What is the final pressure if the contents of these two syringes are injected into a 1.00 L container at 273 K?

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If 2.0 mol of gas A is mixed with 1.0 mol of gas B to give a total pressure of 1.6 atm,what is the partial pressure of gas A and B?

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The rate of effusion of two different gases is known as

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The concentration of water vapor in a sample of air that has a partial pressure of water of 0.91 torr and a total pressure of air of 735 torr is ________ ppm.

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Give the definition for diffusion.

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What is the temperature of 144.32 g of O2 found in a 5.00L container kept at a pressure of 3.28 atm assuming it behaves as a real gas?

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What volume (in mL)will a sample of F2 gas occupy in a syringe at 5.5 atm,if the F2 has a volume of 25.0 mL at 1.2 atm?

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In a container containing CO,H2,and O2,what is the mole fraction of CO if the H2 mole fraction is 0.22 and the O2 mole fraction is 0.58?

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Give the temperature and pressure at STP.

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How many liters of hydrogen gas are needed to produce 100.0 grams of water at 25.0°C and 1.00 atm pressure according to the chemical equation shown below? 2 H2(g)+ O2(g)→ 2 H2O(l)

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A large balloon is initially filled to a volume of 25.0 L at 353 K and a pressure of 2575 mm Hg.What volume of gas will the balloon contain at 1.35 atm and 253 K?

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Why does the rate of effusion increase with a decrease in the molar mass?

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A basketball is inflated to a pressure of 1.90 atm in a 24.0°C garage.What is the pressure of the basketball outside where the temperature is -1.00°C?

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Determine the volume of H2S (at 375 K and 1.20 atm)needed to produce 55.0 g of S.Assume that there is excess SO2 present. 2 H2S(g)+ SO2(g)→ 3 S(s)+ 2 H2O(g)

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A sample of 1.58 g of an unknown gas has a volume of 0.682 L.The sample is kept at 60°C,and exerts a pressure of 1.38 atm.What is the gas?

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A mixture of 1.0 mol He and 1.0 mol Ne are at STP in a rigid container.Which of the following statements is TRUE?

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When 14.0 g of zinc metal reacts with excess HCl,how many liters of H2 gas are produced at STP?

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Calculate the pressure of 4.55 moles of gas occupying 3.86 L at 213 K

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The density of nitric oxide (NO)gas at 1.21 atm and 54.1°C is ________ g/L.

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A 4.00-L flask contains nitrogen gas at 25°C and 1.00 atm pressure.What is the final pressure in the flask if an additional 2.00 g of N2 gas is added to the flask and the flask cooled to -55°C?

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