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Suppose a lake has T=30 degrees C and an O2 concentration of 0.7mg/L, and 1.5mg of carbon (as CO2) is converted by photosynthesis to organic biomass (CH20) during one day under these conditions. A.) Calculate O's aqueous solubility in surface waters of this lake. B.) Will the amount of O2 produced by photosynthesis cause O2's aqueous solubility to be exceeded in 1L of this lake water? If yes, how much? C.) If your answer to part B is yes, then what volume of lake water would be saturated with O2 if you include the O2 produced by photosynthesis?

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