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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% (D)</p> Signup and view all the answers

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

<p>Argon (B)</p> Signup and view all the answers

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?

What is the percentage of oxygen in dry air by number of molecules?

What is the percentage of carbon dioxide in dry air by number of molecules?

What is the average percentage of water vapor in air at sea level?

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

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