Question

Endrin is a pesticide that causes damage to the human nervous system. The maximum contaminant level (MCL) of endrin in drinking water is 2 ug/L. If 20 L of endrin (density = 1 kg/L) is released into a lake that can be approximated as having dimensions of 2 miles long, 335 ft wide, and 50 ft deep, answer the following: a. What is the volume of the lake in (i) gallons, (ii) cubic meters, and (iii) liters? b. What is the final concentration of endrin in (i) ug/L and (ii) ppb? Does this concentration comply with the MCL?

Answer 1

MCL DeasSoP 6.9 เจ้ 6