A cubical box of side of `1 m` contains helium gas (atomic weight 4) at a pressure of `100 N / m^2`. During" an observation time of `1 s`, an atom traveling with the root-mean-square speed parallel to one of the edges of the cube, was found to make 500 hits with a particular wall, without any collision with other atoms. Evaluate the temperature (in K ) of the gas, (Take `R=25 / 3 J mo^(-1) K^(-1)` and `k=1.38 xx 10^(-23) J / K` )

Answer

160