In Part II, a concentration of the unknown amount of the metal salt will be calculated based on the calibration curve. quipment, Glassware, and Reagents: GENESYS 30 Spectrophotometer, Analytical Balance, Cuvettes, Kimwipes 2,50mL Volumetric Flask, 10-mL Mohr pipet, 100mL beaker, 4 test tubes (20150mm), Cobalt (II) Chloride Hexahydrate or Copper (II) Sulfate Pentahydrate. Distilled/Deionized water. Procedure: Prenaration of Standard Stock Solution: Using glassine weighing paper or weighing boat, weigh (to the nearest 0.1mg=0.0001g ) about 0.84g of metal hydrate salt into the 50mL volumetric flask; use a funnel to ensure quantitative transfer of the solid. Rinse the funnel well, dissolve the metal hydrate salt in about 20mL of distilled/deionized water, dilute to the mark, and mix thoroughly. Chemical Name of Transition Metal Salt Cobalt ll Ch boride He xahyolra Molecular Formula of Transition Metal Salt Cl2CoH12O6 Molar Mass of Transition Metal Salt 237.93g/mol Mass of Metal Hydrate Salt 0.8404 Volume of Solution L Molarity of Standard Stock Solution mol/L Quantitative Analysis of Transition Metal Salts by UV/Vis Spectroscopy 7. The cursor position and corresponding ABS value are displayed above the spectrum plot. As you move the cursor across the recorded spectrum, identify and record the wavelength with the largest absorbance value (see spectrum below for reference). Spectrum with Selected him: 8. To obtain a printout of the generated spectrum, place a thumb drive in the instrument's USB port (on the lower from side) and select P. to save your data. Select Export data