Dimethylglyoxime, H₂C₄H₆O₂N₂ is added to 0.102 g sample containing Ni (II) to produce 175
mg precipitate according to the reaction;
Ni₂⁺ + 2H₂C₄H₆O₂N₂ → 2H⁺ + Ni(H₂C₄H₆O₂N₂)₂
Calculate the %Ni in the sample