When the Ag⁺ concentration is 3.30×10⁻⁴ M, the observed cell potential at 298 K for an electrochemical cell with the following reaction is 1.770 V. What is the Mn²⁺ concentration?
2Ag⁺ (aq) + Mn(s) → 2Ag(s) + Mn²⁺ (aq)