The complex formed between copper (I) and 1,10-phenanthroline has an absorption maximum at 435 nm and has an absorbance of 0.216 and a molar absorptivity of 7000 L cm-1 mol-1 when measured in a cell of 0 , 50 cm at a concentration of 6.17x10-5 mol / L. Determine its absorbance by making a change in the length of the cell at 3.50 cm.

Mn(acac)3 was found to have its ground state to 1st excited state absorption at 500 nm (Δo). The pairing energy for this complex is 28,000 cm-1 . Based on this information, draw the populated ground state d orbital diagram for this complex.

What is the spin-only magnetic moment for the [NiCl4]Cl2 complex?

To which of the following transition metal ions does EDTA form the weakest coordination bonds? Group of answer choices Hg2+  (log Kf = 21.5) Mn2+  (log Kf = 13.89) Zr4+  (log Kf = 29.3) Co3+  (log Kf = 41.4)

Please help with these.

Calculate the concentrations (mol/L) of nickel and cobalt in each of the following solutions.

You measured the absorbance values at selected wavelengths for one of the complexes above.  Record those values below, as well as the identity of your chosen complex.  Determine your estimate for the wavelength of maximum absorbance (λmax), and show your calculations for the energy of d-orbital splitting, Δ. 0.10 M Ni(NO)2 : 10 drops approximately 0.50 mL  Chosen complex: (Ethylenediamine) C2H4(NH2)2 + Ni(NO)2 (10 drops, hot temperature, light purple color)   Wavelength (λ) nanometers Absorbance 400 nm 0.438 450 nm 0.047 500 nm 0.094 550 nm 0.184 600 nm -0.043 650 nm -0.066 700 nm -0.0125 750 nm -0.121 800 nm -0.218