the discussion section, just before the procedure, for a discussion of this calculation. We will be doing dilution calculations in almost every experiment in this course.

$3.$ The solution described in problem #$2$ is placed in the spectrophotometer. Based on the calibration curve shown on the next page, what would you predict the absorbance to be$?$ Note: like the example given in the discussion, the absorbance should be calculated, not just estimated from the graph. Notice that the slope and intercept of the calibration curve are provided in the figure on the next page.

Aborbance $=(el)C$

Absorbance $=$

$1$

The following calibration curve was produced for Red $40.$ The slope was calculated to be $2\mathrm{.}1033{10}^4.$ The intercept of the calibration curve is $0\mathrm{.}0039.$