Calculate the most probable speed of CO2 molecules at 27°C , using the concept of gas constant, R

The most probable speed,                    Ump=2RTM1/2Where         R=8.314×107 erg mol−K−                     T=27+273=300K  M of   CO2=12+(2×16)=44gmol−.Substituting the values, we get : Ump=2×8.314×107ergmol−K−×300K44gmol−1/2=1133.7×106gcm2s−2   ∵  erg =gcm2s−2Thus, Ump=33.67×103cms−=33670cms−