ELE 531 Study Guide - Midterm Guide: .Dwg

Suppose 10 mg of L-deprenyl is diluted in 10 ml water (density 1.0g/ml) and the solution is to be used in the sugary solution approach. What is the mole fraction of the drug? What is the molarity of the drug (mol/L?

1. Only source of BOD in a river is untreated wastes that are being discharge from a food processing plant. The characteristics of untreated waste is not reported for the environmental protection agency of the town . To identify the waste water property from the processing plant the authority measured the DO of the river at 10km and 40km away from the plant and found 5mg/l and 2.5mg/l respectively. The average flow rate of the river is 0.25m/s and average depth is 4.5m with bed activity coefficient of 0.2.assume saturation DO 10mg/l

What should be the volume of the milk (in m3 )which measures 5 l?