A model lists four geometry changes: increasing surface area, decreasing surface area, shortening diffusion distance, and lengthening diffusion distance. Enter the exact number of changes that speed diffusion.
الإجابة الصحيحة
2
الشرح
The model names 2 helpful changes: a larger exchange area and a shorter travel path. Counting a smaller area or a longer distance would be incorrect because each would tend to slow diffusion.