1. Which of the following media contains the largest amount of toluene, C6H5CH3 (show your calculations)? (a) 1 million gallons of water containing 5 ppm of toluene (b) 100 cubic meters of soils (bulk density1.8 g/cu. cm) with 5 ppm of toluene (c) An empty warehouse (30 m × 15 m × 10 m) with 5 ppmV toluene in air (P = 1 atm and T= 20 °C).

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