Question

The temperature of an ideal gas is increased from 120K to 480K. If at 120K, the root mean square speed of gas molecules is v, then at 80k, it will be _____. A)4v B)2v C)v/2 D) v/4

Answer 1

V∝√T

V'÷V =√T'÷T =√480÷120 =2

V'= 2v

So your answer will be B) 2v