Question

A careless fisherman accidentally spilled an entire 20-oz bottle of soda into Lake Michigan. The soda contained 93.2 mg of caffeine (C8H10N4O2) per 20-oz bottle. What is the resulting molar concentration of caffeine in the lake? Assume that the lake receives no additional caffeine other than from this one bottle of soda; you may also assume that the caffeine is evenly distributed throughout the lake. (Aside: Do you think these assumptions are valid?) Some potentially useful facts about Lake Michigan: Surface area = 5.80 x 104 km2 Average depth = 279 ft Average water density = 1.0 g/mL.