The root mean square speed of hydrogen molecules of an ideal hydrogen gas kept in a gas chamber at 0°C is 3180 metres/second. The pressure on the hydrogen gas is (Density of hydrogen gas is $8.99\times {{10}^{-2}}\,kg/{{m}^{3}}$, 1 atmosphere $=1.01\times {{10}^{5}}\,N/{{m}^{2}})$