Given That 50

Given that 50.0 mL of 0.125 M Hg(NO₃) 2 reacts completely with 27.5 mL of aqueous NaI,what is the molarity of the sodium iodide solution? Hg(NO₃) 2(aq) + NaI(aq) → HgI₂(s) + NaNO₃(aq)

A) 0.0688 M
B) 0.114 M
C) 0.138 M
D) 0.227 M
E) 0.455 M