The Henry's law constant for the solubil...

The Henry's law constant for the solubility of `N_2` gas in water at 298 K is `1.0 xx 10^(5)` atm. The mole fraction of `N_2` in air is 0.8. The number of moles of `N_2` from air dissolved in 10 mole of water at 298 K and 5 atm pressure is:

A

`4xx10^(-4)`

B

`4xx10^(-5)`

C

`5xx10^(-4)`

D

`4xx10^(-6)`

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