Hi, it's always me; does anyone know the values of: 1) the molecular diffusivity of the air 2) the turbulent diffusivity of the air 3) the density of CO.

Thank you, Gabriel

and also the molecular diffusivity of CO

Dear Gabriel, you should visit www.webbook.nist.gov/chemistry. There you may found a lot of chemistry details. For molecular and molar diffusivity you may visit www.cstl.nist.gov/div836/chemkin.html . For turbulent diffusivity evaluation you should use a turbulence model. For more details pleace describe precisely your problem. Regards, Detelin