10:46 PM 6% o T-Mobile LTE loncapa.tcc.fl.edu Timer Notes Evaluate Feedback Prin
ID: 511959 • Letter: 1
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10:46 PM 6% o T-Mobile LTE loncapa.tcc.fl.edu Timer Notes Evaluate Feedback Print Info 24-4,5 KE of Due in 1 Ideal Gas hour, 13 (Wolfson minutes 17-23) First, what is the average kinetic energy of an atom or molecule in an ideal gas at 652 K? 1.35x10-20 J You are correct. Previous Tries Your receipt no. is 157-2189 2 What is the rms or thermal speed of oxygen molecules in a gas at 652 K? Note: The mass of a single atom is its atomic mass times 1.661 x 1027kg. 1.75 m/s See Example 17.2. The atomic mass of one oxygen molecule is about 32. Submit Answer Incorrect. Tries 5/15 Previous Tri Post Discussion Send FeedbackExplanation / Answer
rms speed = sqrt (3*R*T/M)
M is molar mass in Kg/mol = 0.032 kg/mol
T = 652 K
use:
rms speed = sqrt (3*R*T/M)
= sqrt (3*8.314*652/0.032)
=712.9 m/s
Answer: 712.9 m/s
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