126. Solving a chemistry problem

Product description

• In whole cow's milk, the average volume diameter of a drop of fat is from 2.9 to 4.4 microns, depending on individual conditions. Other characteristics are more constant: at 20 °C, the fat density is 0.920 g/cm3, the density of the dispersion medium (skimmed milk) is 1.034 g/cm3, and the viscosity is 1.60 mPa*s.

Let us assume that whole milk with a fat droplet diameter of 4 µm is at 20 °C in a rectangular cardboard "package" 15 cm high. the same diameter? (Note, under these conditions, the ascent time of 50% fat is equal to the time of ascent of one drop from half the height of the package)

• In homogenized milk, the diameter of fat droplets is from 0.3 to 0.8 microns, depending on the homogenization pressure and other conditions. Suppose we are talking about milk with a droplet diameter of 0.6 µm. Solve problem 301 for this diameter, under other conditions the same as in 301.

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