Henry's law constant from solubility and partial pressure

1. A.
   $6.85\times10^{-4}$ mol dm$^{-3}$ bar$^{-1}$
2. B.
   $5.14\times10^{-4}$ mol dm$^{-3}$ bar$^{-1}$
3. C.
   $1.028\times10^{-4}$ mol dm$^{-3}$ bar$^{-1}$
4. D.
   $1.371\times10^{-3}$ mol dm$^{-3}$ bar$^{-1}$

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1. A.
   $0.081\,\text{mol dm}^{-3}\text{bar}^{-1}$
2. B.
   $0.075\,\text{mol dm}^{-3}\text{bar}^{-1}$
3. C.
   $0.093\,\text{mol dm}^{-3}\text{bar}^{-1}$
4. D.
   $0.049\,\text{mol dm}^{-3}\text{bar}^{-1}$

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