Calculate the root-mean-square speed of an O2 molecule with an average kinetic energy of 6.2 * 10-21 J at 25
C.
(1 J = 1 kg . m2/s2; 1 mol = 6.02 * 1023)
A) 20 pm/s
B) 230 km/s
C) 480 m/s
D) 120 m/s
E) 230 m/s
Correct Answer:
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