For titration of 20.00 cm3 of Hg(NO3)2 solution after addition of magnesium complexonate Na2MgY and substitution reaction MgU2-Hg2 →HgU2-Mg2, 19.85 cm3 of 0.05 M complexone III (k=1.055) was spent. Calculate the concentration (g/dm3) of the Hg(NO3)2 solution.
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