20. Which of these gas molecules have the highest average velocity at 25°C ?(A) N2 (B) He (C) O2 (D)

問題詳情

20. Which of these gas molecules have the highest average velocity at 25°C ?
(A) N2
(B) He
(C) O2
(D) Ar
(E) none of these

參考答案

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