A pharmaceutical product, P, is made in a batch reactor. The reactor effluent goes through apurifiation process to yield afinal product stream and a waste stream. The initial charge (feed) to thereactor and thefinal product are each weighed, and the reactor effluent, final product, and wastestream are each analyzed for P. The analyzer calibration is a series of meter readings, R,corresponding to known mass fractions of P, xP. xP 0.08 0.16 0.25 0.45
R 105 160 245 360

Required:
Plot the analyzer calibration data on logarithmic axes and determine an expression for xp(R).