The Rms Speed of a Certain Sample of Carbon Dioxide

Question 69
Multiple Choice

The rms speed of a certain sample of carbon dioxide molecules,with a molecular weight of 44.0 g/mole,is 396 m/s.What is the rms speed of water vapor molecules,with a molecular weight of 18.0 g/mol,at the same temperature as the carbon dioxide? A)253 m/s B)387 m/s C)421 m/s D)506 m/s E)619 m/s