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What is the concentration of dissolv...

What is the concentration of dissolved oxygen at `25^(@) C` at 1 atomspheric pressure if partial pressure of oxygen is 0.22 atm ? The Henry's law constant for oxygen is `1.3 xx 10^(-3)` mol `dm^(-3) atm^(-1)`

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`2. 86 xx 1^(-4) mol dm^(-3)`
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