Diffusion vs. Size (please solve both a) and b))

3. Nelson 4.4 Refer to Table 4.2 for the diffusion constants D and radii r of various biologically interesting molecules in water. Plot D versus 1/r for the four largest particles. From the a) experimentally measured data, show that D is inversely proportional to r by curve fitting (linear regression) using your favorite software. In theory, you can find out the exact dependence of D on 1/r and therefore predict the experimentally observable relationship. Compare your theoretical predication with b) your fitting parameter. Table 4.2: Sizes and diffusion constants of some molecules in water at 20C. [rivm 1anrora, 1901.]