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CHEMISTRY:PRIN.+REACTIONS-OWLV2 ACCESS
8th Edition
ISBN: 9781305079298
Author: Masterton
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 27QAP
The gas in the discharge cell of a laser contains (in mole percent) 11% CO2, 5.3% N2, and 84% He.
(a) What is the molar mass of this mixture?
(b) Calculate the density of this gas mixture at 32°C and 758 mm Hg.
(c) What is the ratio of the density of this gas to that of air
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A mixture of CO2 and Kr weighs 37.6 g and exerts a pressure of 0.855 atm in its container.
Since Kr is expensive, you wish to recover it from the mixture. After the CO2 is completely
removed by absorption with NaOH(s), the pressure in the container is 0.293 atm.
(a) How many grams of CO2 were originally present?
(b) How many grams of Kr can you recover?
(a) grams CO2:
(b) grams Kr:
3.
8.
A mixture of CO₂ and Kr weighs 29.6 g and exerts a pressure of 0.895 atm in its container. Since Kr is
expensive, you wish to recover it from the mixture. After the CO₂ is completely removed by absorption
with NaOH(s), the pressure in the container is 0.295 atm.
(a) How many grams of CO₂ were originally present?
(b) How many grams of Kr can you recover?
(a) grams CO₂:
g
(b) grams Kr:
(5) Using the data in Table 1C.3 (from the textbook), calculate the pressure that 2.500 moles of
carbon dioxide confined in a volume of 1.000 L at 450 K exerts. Compare the pressure with
that calculated assuming ideal-gas behavior.
Chapter 5 Solutions
CHEMISTRY:PRIN.+REACTIONS-OWLV2 ACCESS
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