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What would be the saturation concentration (mol/L) of oxygen in a river in winter when the...

What would be the saturation concentration (mol/L) of oxygen in a river in winter when the air temperature is 0 °C if the Henry’s law constant at this temperature is 2.28×10^(-3) molL^(-1) atm^(-1) ? What would be the answer in units of mg/L?

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