One millimole of Ni(NO3)2 dissolves in 210mL of a solution thatis .500M in NH3.
(a) What is the initial concentration of Ni(NO3)2 in thesolution?
------> The answer to (a) is .00476 M. I just can't figureout part (b)
(b) What is the equilibrium concentration of Ni^2+(aq) in thesolution?
HINT: The Ni^2+ forms a hexammonia complex: Ni(NH3)6^2+. Kf =5.5 x 10^8.