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Use this value (401.7 ppm CO2) to calculate the molar concentration (i.e., in units of moles/L...

Use this value (401.7 ppm CO2) to calculate the molar concentration (i.e., in units of moles/L or M) of dissolved CO2 in rainwater in equilibrium with the atmosphere at 25 oC. The Henry’s Law constant for CO2 at 25 oC is 10-1.5 mol L-1 atm-1.

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