The Rms Speed of a Certain Sample of Carbon Dioxide

question 37

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) 619 m/s
• C) 506 m/s
• D) 421 m/s
• E) 387 m/s

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Definitions:

H-N-C Bond Angle

The angle between the hydrogen, nitrogen, and carbon atoms in a molecule, significant in determining the structure and properties of amines and amides.

Methyl Azide

An organic compound with the formula CH3N3, used in the synthesis of various nitrogen-containing compounds.

Formal Charges

A concept used in chemistry to assign charges to atoms within molecules, based on a bookkeeping formalism.

HCC Bond Angle

The geometric angle between hydrogen-carbon-carbon atoms in a molecule, commonly found in hydrocarbons.