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c) Trichloroethane, CH3CHCl3 is widely used as a cleaning solvent. It is mobile in soils and readily migrates to groundwater. The concentration of CH3CHCl3 is

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c) Trichloroethane, CH3CHCl3 is widely used as a cleaning solvent. It is mobile in soils and readily migrates to groundwater. The concentration of CH3CHCl3 is found to be 35 ppb in groundwater sample. Express the concentration of CH3CHCl3 in mg/L, ppm, ppt and ng/m. (8 marks)

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