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Air is a mixture of several gases. The 10 most abundant of these gases are listed here along with their mole fractions and molar masses. Component Mole fraction Molar mass (g/mol) Nitrogen 0.78084 28.013 Oxygen 0.20948 31.998 Argon 0.00934 39.948 Carbon dioxide 0.000375 44.0099 Neon 0.00001818 20.183 Helium 0.00000524 4.003 Methane 0.000002 16.043 83.80 Krypton 0.00000114 Hydrogen 0.0000005 2.0159 Nitrous oxide 0.0000005 44.0128 What mass of carbon dioxide is present in 1.00 m³ of dry air at a temperature of 19 °C and a pressure of 687 torr ? Express your answer with the appropriate units. ▸ View Available Hint(s) LO Value Submit ▾ Part B μÀ LON Calculate the mass percentage of oxygen in dry air. Express your answer with the appropriate units. ► View Available Hint(s) HÅ Units Value ERING ? Units ?

Air is a mixture of several gases. The 10 most abundant of these gases are listed here along with their mole fractions and molar masses. Component Mole fraction Molar mass (g/mol) Nitrogen 0.78084 28.013 Oxygen 0.20948 31.998 Argon 0.00934 39.948 Carbon dioxide 0.000375 44.0099 Neon 0.00001818 20.183 Helium 0.00000524 4.003 Methane 0.000002 16.043 83.80 Krypton 0.00000114 Hydrogen 0.0000005 2.0159 Nitrous oxide 0.0000005 44.0128 What mass of carbon dioxide is present in 1.00 m³ of dry air at a temperature of 19 °C and a pressure of 687 torr ? Express your answer with the appropriate units. ▸ View Available Hint(s) LO Value Submit ▾ Part B μÀ LON Calculate the mass percentage of oxygen in dry air. Express your answer with the appropriate units. ► View Available Hint(s) HÅ Units Value ERING ? Units ?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Air is a mixture of several gases. The 10 most abundant of these gases are listed here along with their mole fractions and molar masses. Molar mass Component Mole fraction (g/mol) 28.013 31.998 39.948 44.0099 20.183 4.003 16.043 83.80 2.0159 Nitrogen 0.78084 Oxygen 0.20948 Argon 0.00934 Carbon dioxide 0.000375 Neon 0.00001818 Helium 0.00000524 Methane 0.000002 0.00000114 Krypton Hydrogen 0.0000005 Nitrous oxide 0.0000005 44.0128 Part A What mass of carbon dioxide is present in 1.00 m³ of dry air at a temperature of 19 °C and a pressure of 687 torr? Express your answer with the appropriate units. ▸ View Available Hint(s) 0 Value Submit Part B μᾶ O Submit μÀ Value 3 Calculate the mass percentage of oxygen in dry air. Express your answer with the appropriate units. ▸ View Available Hint(s) B Units ? Units ?
Transcribed Image Text:Air is a mixture of several gases. The 10 most abundant of these gases are listed here along with their mole fractions and molar masses. Molar mass Component Mole fraction (g/mol) 28.013 31.998 39.948 44.0099 20.183 4.003 16.043 83.80 2.0159 Nitrogen 0.78084 Oxygen 0.20948 Argon 0.00934 Carbon dioxide 0.000375 Neon 0.00001818 Helium 0.00000524 Methane 0.000002 0.00000114 Krypton Hydrogen 0.0000005 Nitrous oxide 0.0000005 44.0128 Part A What mass of carbon dioxide is present in 1.00 m³ of dry air at a temperature of 19 °C and a pressure of 687 torr? Express your answer with the appropriate units. ▸ View Available Hint(s) 0 Value Submit Part B μᾶ O Submit μÀ Value 3 Calculate the mass percentage of oxygen in dry air. Express your answer with the appropriate units. ▸ View Available Hint(s) B Units ? Units ?
Expert Solution
Step 1: Defining mole fraction

Answer:

Mole fraction of a gas in a gaseous mixture will be equal to the ratio of number of moles of the gas and total number of moles of all the gases, so

Mole space fraction equals straight n subscript gas over straight n subscript total

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