Following is a table of data showing the absorbance of a solution of cobalt(II)  ion at different concentrations at a wavelength of 510 nm.  .      Absorbance          Concentration (M)         0.450                    0.044          0.691                      0.072          0.894                      0.096          1.210                      0.125          You are given a solution of  unknown concentration containing cobalt(II) ions, which gives you an  absorbance of 0.67.          Calculate the unknown conc., using data from  the table given  above.           (A = kC). Use the average ‘k’ value from the above set of data.

Following is a table of data showing the absorbance of a solution of cobalt(II)  ion at different concentrations at a wavelength of 510 nm.

 .

     Absorbance          Concentration (M)

        0.450                    0.044

         0.691                      0.072

         0.894                      0.096

         1.210                      0.125

         You are given a solution of  unknown concentration containing cobalt(II) ions, which gives you an  absorbance of 0.67.

         Calculate the unknown conc., using data from  the table given  above.

          (A = kC). Use the average ‘k’ value from the above set of data.

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