Arrange the Following Gaseous Substances in Order of Decreasing Average

question 1

Multiple Choice

Arrange the following gaseous substances in order of decreasing average molecular speed at 25°C.

• A) helium > oxygen > fluorine > carbon dioxide > argon
• B) helium > oxygen > fluorine > argon > carbon dioxide
• C) argon > oxygen > helium > carbon dioxide > fluorine
• D) carbon dioxide > argon > fluorine > oxygen > helium
• E) carbon dioxide > fluorine > argon > oxygen > helium

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