Help please QUESTION 8An amount of a gas with a volume of 6,300 mL is changed from a pressure of 4,800 to 1,600 mmHg at constant temperature.What would be the approximate new volume?OA 1600 mLOB.9,600 mLOC.4,800 mLOD. 19,000 mLOE 2,100 mLQUESTION 9At the same temperature, the average kinetic energy of oxygen molecules relative to the average kinetic energy of hydrogenmoleculesOA varies depending on the pressureOB. is the sameOC. varies depending on the amount of gasesD. Is greaterOE. is less

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Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter13: Gases

Section: Chapter Questions

Problem 105AP

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A 15.0-L rigid container was charged with 0.500 atm of krypton gas and 1.50 atm of chlorine gas at 350.C. The krypton and chlorine react to form krypton tetrachloride. What mass of krypton tetrachloride can be produced assuming 100% yield?
53 N2O5is an unstable gas that decomposes according to the following reaction: 2N2O5(g)4NO2(g)+O2(g) What would be the total pressure of gases present if a 10.0-L container 22.0 C begins with 0.400 atm of N2O5 and the gas completely decomposes?
What is the temperature of an 11.2-L sample of carbon monoxide, CO, at 744 torr if it occupies 13.3 L at 55 C and 74-4 torr?
38 For a gas sample whose total pressure is 740 torr, what are the partial pressures if the gas present consists of 1.3 mol of N2, 0.33 mol of O2, and 0.061 moI of Ar?
Many nitrate salts can be decomposed by heating. For example, blue, anhydrous copper(II) nitrate produces the gases nitrogen dioxide and oxygen when heated. In the laboratory, you find that a sample of this salt produced a 0.195-g mixture of gaseous NO2 and O2 with a total pressure of 725 mm Hg at 35 C in a 125-mL flask (and black, solid CuO was left as a residue). What is the average molar mass of the gas mixture? What are the mole fractions of NO2 and O2 in the mixture? What amount of each gas b in the mixture? Do these amounts reflect the relative amounts of NO2 and O2 expected based on the balanced equation? Is it possible that the fact that some NO2 molecules combine to give N2O4 plays a role? Heating copper(II) nitrate produces nitrogen dioxide and oxygen gas and leaves a residue of copper(ll) oxide.
A 3.00-L flask containing 2.0 mol of O2 and 1.0 mol of N2 is in a room that is at 22.0C. a How much (what fraction) of the total pressure in the flask is due to the N2? b The flask is cooled and the pressure drops. What happens, if anything, to the mole fraction of the O2 at the lower temperature? c L of liquid water is introduced into the flask containing both gases. The pressure is then measured about 45 minutes later. Would you expect the measured pressure to be higher or lower? d Given the information in this problem and the conditions in part c, would it be possible to calculate the pressure in the flask after the introduction of the water? If it is not possible with the given information, what further information would you need to accomplish this task?
61 As one step in its purification, nickel metal reacts with carbon monoxide to form a compound called nickel tetracarbonyl, Ni(CO)4, which is a gas at temperature above about 316 K. A 2.000-L flask is filled with CO gas to a pressure of 748 torr at 350.0 K, and then 5.00 g of Ni is added. If the reaction describe occurs and goes to completion at constant temperature, what will the final pressure in the falsk be?
5.15 Gas pressure can be expressed in units of mm Hg, atm, torr, and kPa. Convert these pressure values. (a) 722 mm Hg to atm, (b) 1.25 atm to mm Hg, (c) 542 mm Hg to torr, (d) 745 mm Hg to kPa, (e) 708 kPa to atm

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