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
Correct Answer:
Verified
Correct Answer:
Verified
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