Which Set of Gases Is Listed from Lowest to Highest

question 94

Multiple Choice

Which set of gases is listed from lowest to highest root-mean-square speed at 25°C?

• A) Kr < CO₂ < NO₂ < SF₆
• B) SF₆ < NO₂ < CO₂ < Kr
• C) SF₆ < Kr < CO₂ < NO₂
• D) SF₆ < Kr < NO₂ < CO₂
• E) CO₂ < NO₂ < Kr < SF₆

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