Constructing a standard curve from set of data and finding the concentration of an unknown sample. Attachments are in Excel.

Construct a standard curve from a data set and find the concentration of an unknown sample.

The following data was obtained using spectrophotometry:
Absorb.----------- ug/ml protein
0--------------------------0
0.22--------------------100
0.098-------------------50
0.086-------------------25
0.038------------------12.5
0.013------------------6.25
0.02------------------3.125

0.16----------------unknown

Please refer to the attachment below for the complete question.

Attached file(s):

standard curve problem.XLS  View File