Question

Assuming: the dissolved concentration of trichloroethane (C2Cl3H, TCE) in a lake is 0.85 ng/ml (or ppb). Given a dimensionless Henry’s Law constant (H) of 0.035, and a measured gas exchange coefficient of 2.6x10^-3 cm/sec in water, for propane (C3H8), what is the flux density of TCE from the lake? Assuming Ca is essentially zero. (MW TCE = 131 g/mol; MW propane = 44 g/mol; MW: molar weight - the mass of 1 mole of a compound).