First we need to deterine the extinction coefficient for the system at 710 and 740 nm. At the highest [HCl] the solution is essentially all [CoCl4]-2, the [Co(H2O)6]+2 can ignored. What is the extenction coefficient for 740 nm?

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.