Question

How do pressure and temperature affect diffusion rates

Answer 1

http://openstudy.com/users/frostbite#/updates/50a54ee5e4b0329300a8e6f1

Answer 2

No idea how many times i have answered that question

Answer 3

But to write it again:
High pressure -> high diffusion rate
Low pressure -> low diffusion rate
High temperature -> high diffusion rate
Low temperature -> low diffusion rate.