How fast does ethane(c2h6)) gas travel compare to chlorine gas

First of all write the molar masses of Gases,

                     Molar Mass of Cl₂  =  71 g/mol

                     Molar Mass of Ethane  =  30 g/mol

According to Graham's Law of Diffusion,

= 

= 

= 

= 1.53

Result:
          So, Ethane gas will diffuse or move 1.53 time faster than Chlorine gas.

1= c 2= a or d3 = idk sorry 4= c5= c