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a) A vulcanized rubber is considered for a use as the packaging material. The design parameter for the packaging is 0.15 mm thickness and at 35C. The partial pressure of oxygen (O2) at the outside and inside packaging is recorded at 160 mmHg and 8 mmHg respectively. It is assumes that the resistances to diffusion outside the film and inside are negligible compared to the resistance of the film. Calculate the rate of Oz flux diffusion at steady state. Given the permeability of O2 in vulcanized rubber at 298 K is 0.152 x 10-10 m solutel(s.m2.atm/m). (10 marks)