Which of the following gases has the lowest average speed at 25°C? A) He B) H₂Se C) PH₃ D) F₂

Name: Which of the following gases has the lowest average speed at 25°C? A) He B) H 2 Se C) PH 3 D) F 2
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Question

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The average speed of a gas is inversely proportional to the square root of its molar mass. H₂Se has the highest molar mass among the given gases, resulting in the lowest average speed at 25°C.

Which of the Following Gases Has the Lowest Average Speed