pleast write out in proportions all together. rhen cancel out labels

by the reaction given in your text and in class? 3. A 2.563-9 sample of unknown gave 6.993 g of bis(dimethylglyoximate)nickel(II) (FW 288.91) when analyzed by the reaction given in your text and in class. Find the weight percent of Ni in the unknown. 4. Using the Ni concentration obtained in #3 above and assuming that you are starting with a 1.200-9 sample, what volume of 2.25% alcoholic dimethylglyoxime (DMG) reagent must be used in order to provide a 50% excess of reagent? Assume the density of the DMG solution is 0.795 g/mL