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The Root-Mean-Square Speed (Thermal Speed)of a Certain Sample of Carbon

Question 50

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The root-mean-square speed (thermal speed) of a certain sample of carbon dioxide molecules,with a molecular weight of 44 g/mol,is 396 m/s.What is the root-mean-square speed (thermal speed) of water vapor molecules,with a molecular weight of 18 g/mol,at the same temperature?


A) 253 m/s
B) 396 m/s
C) 421 m/s
D) 506 m/s
E) 619 m/s

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