At What Temperature Would the Root Mean Square Speed of Oxygen

question 180

Multiple Choice

At what temperature would the root mean square speed of oxygen molecules, O₂, be $14.0 \mathrm {~m} / \mathrm { s }$ if oxygen behaves like an ideal gas? The mass of one O₂ molecule is 5.312 × 10^-26 kg, and the Boltzmann constant is 1.38 × 10^-23 J/K.

• A) 0.251 K
• B) 2090 K
• C) 6270 K
• D) 1.52 × 10²³ K

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