Food Packaging Problems

Resistance to permeability of the packaging film 

1. Apple is stored at 30° celsius in MAP of laminated films made up of 150 micro-metre thick polyethylene and 100 micro metre thick nylon the partial pressure of oxygen outside and inside the package are 0 and 0.21 atm respectively. The permeability values of polyethylene and nylon in m³ solute STP meter-2 s-1 atm -1 per metre thickness or 4.17×10 ^ -12 and 1.52x 10^-14 respectively,then the ratio of resistance to permeation between nylon and polyethylene films will be _______________________

        solution:https://youtu.be/sl3FpPogpXw