1. You are studying a river for the flow of acetone following a spill. The spill released acetone into the river at a rate of 100 kg/min. Acetone is measured flowing downstream away from the area you are studying at a rate of 5 kg/min. Based on the MSDS sheet, acetone evaporates very quickly from water. If you have found that the rate of acetone accumulation in the river is 10 kg/min what was the rate of evaporation of acetone from the river?

A. Which equation will you use?

dM/dt = I O + So si

Or

dC/dt = I / V O / V + So / V si / V

B. Solve the question using the chosen equation