Dinitrogen difluoride gas is collected at 5.0 °C in an evacuated flask with a measured volume of 40.0 L. When all the gas has been collected, the pressure in theflask is measured to be 0.070 atm.Calculate the mass and number of moles of dinitrogen difluoride gas that were collected. Round your answer to 2 significant digits.mass: gx10mole: mol

Given: Volume= 40.0 L Pressure= 0.070 atm Temperature= 5.0oC= 278.15 K

Answered: Dinitrogen difluoride gas is collected…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter8: Properties Of Gases

Section: Chapter Questions

Problem 18QRT

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109 An ore sample with a mass of 670 kg contains 27.7% magnesium carbonate, MgCO3. If all of the magnesium carbonate in this ore sample is decomposed to form carbon dioxide, describe how to determine what volume of CO2 is evolved during the process. What would have to be measured to predict the needed volume in advance?
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A chemist weighed out 5.14 g of a mixture containing unknown amounts of BaO(s) and CaO(s) and placed the sample in a 1.50-L flask containing CO2(g) at 30.0C and 750. torr. After the reaction to form BaCO3(s) and CaCO3(s) was completed, the pressure of CO2(g) remaining was 230. torr. Calculate the mass percentages of CaO(s) and BaO(s) in the mixture.
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