The root-mean-square speed (thermal speed) of the molecules of a gas is 200 m/s at 23.0°C. At 227°C the root-mean-square speed (thermal speed) of the molecules will be closest to
A) 160 m/s.
B) 330 m/s.
C) 260 m/s.
D) 630 m/s.
E) 2000 m/s.
Answer: C
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