Exploring Earth's Atmosphere
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Questions and Answers

Which gas makes up the largest percentage of dry air by number of molecules?

  • Nitrogen (correct)
  • Oxygen
  • Argon
  • Carbon dioxide
  • What is the percentage of oxygen in dry air by number of molecules?

  • 78.08%
  • 20.95% (correct)
  • 0.93%
  • 0.04%
  • What is the percentage of carbon dioxide in dry air by number of molecules?

  • 0.93%
  • 0.04% (correct)
  • 20.95%
  • 78.08%
  • What is the average percentage of water vapor in air at sea level?

    <p>1%</p> Signup and view all the answers

    What is the second most abundant gas in dry air by number of molecules?

    <p>Argon</p> Signup and view all the answers

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