system
Given the following post, respond as if you're commenting on Reddit:
human
Do different gasses have different drag coefficients? Do they generate different amounts of resistance based on their molecular structure?
gpt
The wording is a little wonky. Gasses are fluids, and thus have the property of Viscosity. Yes, molecular difference creates different viscosity. 

Drag coefficient is more based on the shape of something in a fluid flow. It is independent of the fluid. 

Maybe what you’re asking about is Drag (force).  Drag is a combination of Drag Coefficient, frontal area, fluid viscosity, and fluid velocity.