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A supplier of frozen hamburger patties is thinking of packaging them in 0.1 mm thick polypropylene film. The permeability of polypropylene to O2 and water
A supplier of frozen hamburger patties is thinking of packaging them in 0.1 mm thick polypropylene film. The permeability of polypropylene to O2 and water vapor is 1x10-8 cm2/(s-atm) and 8x10-15 g/(s cm-Pa) respectively. The partial pressure of O2 is 0 atm and that of water vapor is 0.12 Pa inside the package, while outside the package the partial pressure of O2 is 0.21 atm and that of water vapor is 0.04 Pa. Calculate how much oxygen and how much water vapor will pass through the polypropylene film of 600 cm2 surface area in one week.
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