You are given a solid UNKNOWN, containing copper, weighing 1.6595 g. You dissolve this in concentrated Nitric Acid, HNO3, transfer quantitatively to a 100 mL volumetric flask, add the required amount of Ammonia, NH3, dilute to volume and mix thoroughly.This resulting solution is too concentrated and the resulting %T measured in the same cuvet and spectrometer as before gave little or no transmission (lt;10%).You are told to pipet 12.00 mL into a 100 mL volumetric flask, add the required amount of ammonia, dilute to volume and mix.Spectroscopic measurement of this solution gave %T. 38.5 %CALCULATE:The Percent of copper in the original solid UNKNOWN._________%Cu
