The Root-Mean-Square Velocity of a Gas in a Closed Container

question 59

Multiple Choice

The root-mean-square velocity of a gas in a closed container of fixed volume is increased from 345 m/s to 690 m/s. Which one of the following statements might explain correctly how this change was accomplished?

• A) By pumping in more gas at constant temperature, the pressure was quadrupled.
• B) By heating the gas, the temperature was doubled.
• C) By heating the gas, the pressure was quadrupled.
• D) By pumping out 75% of the gas at constant temperature, the pressure was decreased to 25% of its original value.
• E) None of these statements correctly explains the change.

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