Hydrogen gas has a henrys constant of 78 x 10-4 molkg bar, Ask an Expert

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Hydrogen gas has a Henry's Constant of 7.8 x 10-4 mol/kg . bar@ 25 degrees celcius when dissolving in water. If the toralpressure of gas (H2 gas plus water vapour) over water is 1.0 bar,what is the concentration of H2 in the water in grams permililitre?

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