Using graph paper or Excel, plot the concentration of methylene blue (x-axis) against absorbance at Amax (y-axis). Determine the equation of the line in the form y = mx c, where y is the absorbance at Amax, m is the slope of the line, x is the concentration of methylene blue, and c is where the graph intercepts the y-axis. A well-conducted experiment should have a value close to zero.What is the slope of the line?Concentration of methylene blue in Unknown in ppm
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