In order to determine nickel ion concentration in unknown solution the following experiments were performed with the help of proper cheating agent dimethylglyoxime (OMG The blank sample and following standard solutions were analyzed by spectrophotometer at wavelength 421 nm (421 nm is specific absorption wavelength for nickel DMG complex) and 1 cm quartz sample cell. The obtained absorbance values are summarized in table. Also, the equation of calibration curve stated below. With the help of equation of calibration curve please calculate the nickel ion concentration in mmol/l for unknown solution Concentration of Absorbance LN lon T rol/L) 0.002 0.093 0.004 0.229 0.008 0.350 0.012 0.487 0.016 0.785 Unown 0335 09 05 55. DONO 00 0309 0015 0,04 In order to determine nickel ion concentration in unknown solution the following experiments were performed with the help of proper cheating agent dimethylglyoxime (OMG The blank sample and following standard solutions were analyzed by spectrophotometer at wavelength 421 nm (421 nm is specific absorption wavelength for nickel DMG complex) and 1 cm quartz sample cell. The obtained absorbance values are summarized in table. Also, the equation of calibration curve stated below. With the help of equation of calibration curve please calculate the nickel ion concentration in mmol/l for unknown solution Concentration of Absorbance LN lon T rol/L) 0.002 0.093 0.004 0.229 0.008 0.350 0.012 0.487 0.016 0.785 Unown 0335 09 05 55. DONO 00 0309 0015 0,04