Final answer:
Percent transmittance and absorption are inversely related in spectroscopy. As the percent transmittance increases, the absorption decreases, and vice versa.
Step-by-step explanation:
In spectroscopy, percent transmittance and absorption are inversely related. Percent transmittance is a measure of how much light is transmitted through a sample, while absorption is a measure of how much light is absorbed by a sample. In other words, as the percent transmittance increases, the absorption decreases, and vice versa. An example of this relationship can be seen in the plot of light absorption versus wavelength for water, where high absorption corresponds to low percent transmittance.