18. According to the results of Experiment 3, for green food coloring, at which of the following exposure times was the absorbance measured at 427 nm closest to the absorbance measured at 603 nm?
Your Answer is
Correct Answer is G
Explanation
Look at figure 3, the abscissa where the two lines intersect is the time when the absorption is the closest, and the abscissa time is 3 min