The average speed of gas molecules is equal to: (A) \( \left[\frac{2 R T}{M}\right]^{1 / 2} \) (...

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The average speed of gas molecules is equal to:
(A) \( \left[\frac{2 R T}{M}\right]^{1 / 2} \)
(B) \( \left[\frac{3 R T}{M}\right]^{1 / 2} \)
(C) \( \left[\frac{8 R T}{\pi M}\right]^{1 / 2} \)
(D) \( \left[\frac{4 R T}{\pi M}\right]^{1 / 2} \)
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