1. What effect would the diameter of the molecule have on the effusion rate?
   
   
   1. type=A value=1> The greater the diameter, the slower the effusion rate, because the molecule will be hindered passing through the pore.
   2. The greater the diameter, the slower the effusion rate, because the molecule will collide with the pore more often.
   3. The greater the diameter, the faster the effusion rate, because the molecule will be hindered passing through the pore.
   4. The greater the diameter, the faster the effusion rate, because the molecule will collide with the pore more often.