20) Which of the following is NOT a rule for diffusion of gases a. Gases move from areas of higher partial pressure to areas of lower partial pressure b. Diffusion is related to the thickness of the membrane c. The rate of diffusion of a gas through a liquid is directly proportional to the solubility coefficient of the gas and inversely proportional to the square root of the gram molecular weight d. Diffusion rate is proportional to surface area of the membrane e. They are all rules for diffusion of gases