5. The resistance of the aqueous extract of an ashed cheese sample containing table salt in a cell with electrodes of 2.54 cm2 area and a distance of 0.65 cm between them is 5.61 Ohm. Determine the percentage content of table salt in the cheese if the molar electrical conductivity of the extract solution is 79.9*10-4 Ohm-1 m2 mol-1, and the density of the solution is 1.01 g/cm3.

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