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a) Calculate the mean free path of a gas with an average speed of 10 m/s with collision frequency of 10 s-1. b) Calculate the mean free path of a gas with a density of 10 particles/cm3 and molecular diameter of 0.1 nm. c) Calculate the mean free path of a gas in a 1 cm3 container with 10 molecules and molecular diameter of 0.1 nm.