The Root-Mean-Square Speed (Thermal Speed)of the Molecules of a Gas

question 32

Multiple Choice

The root-mean-square speed (thermal speed) of the molecules of a gas is 200 m/s at a temperature 23.0°C.What is the mass of the individual molecules? The Boltzmann constant is .

• A) 2.13 × 10^-25 kg
• B) 2.45 × 10^-25 kg
• C) 5.66 × 10^-25 kg
• D) 1.78 × 10^-25 kg
• E) 3.11 × 10^-25 kg

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