The average kinetic energy of the molecules of a gas at 27°C is 9 × 10–20 J. what is its average K.E. at 227°C?
5 × 10–20 J
10 × 10–20 J
15 × 10–20 J
20 × 10–20 J
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Mean square velocity of five molecules of velocities 2 m/s, 3 m/s, 4 m/s, 5 m/s and 6 m/s is