4-35. (a) The linear calibration curve in Figure 4-13 is y=0.01630 (0.00022)x+0.0047(0.0026) with sy=0.0059. Find the quantity of unknown protein that gives a measured absorbance of 0.264 when a blank has an absorbance of 0.095. (b) Figure 4-13 has n=14 calibration points in the linear portion. You measure k=4 replicate samples of unknown and find a mean corrected absorbance of 0.169. Find the standard uncertainty and 95% confidence interval for protein in the unknown. Amount of protein (g)