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The vapour pressure of mercury is 0.002 ...

The vapour pressure of mercury is 0.002 mm Hg at `27^(@)C` .`K_(c)` for the process `Hg(l)hArrHg(g) `is :

A

`1.068 xx10^(-7)M`

B

`0.002M`

C

`8.12xx10^(-5)M`

D

`3.9xx10^(-5)M`

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A
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