For example, in the gravimetric determination of nickel, the molar mass of the precipitate bis ( dimethylglyoximate ) nickel [ Ni ( dmgH ) 2 ] is 288.915 ( 7 ), while the molar mass of nickel is 58.6934 ( 2 ) : hence 288.915 ( 7 ) / 58.6934 ( 2 ) = 4.9224 ( 1 ) grams of [ Ni ( dmgH ) 2 ] precipitate is equivalent to one gram of nickel and the equivalence factor is 0.203151 ( 5 ).
