4. A sample of an organic compound weighing 1.067 mg was subjected to pyrolysis under conditions when the sulfur in the substance turns into hydrogen sulfide. The gaseous decomposition products after the chromatographic separation of cyan were passed into a conductometric cell containing a solution of mercury nitrate. As a result, the resistance of the solution in the cell increased to ΔRх. Standard samples were subjected to the same transformations, ΔR values were measured and the following data were obtained:
m, mg 0.250 0.270 0.290 0.310
ΔR•106, Ohm 460 495 525 555
Calculate the mass fraction (%) of sulfur in the organic compound if ΔRх= 546•106Ω.

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