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A jar contains a gas and a few drops of ...

A jar contains a gas and a few drops of water at absolute temperture `T_(1)`. The pressure in the jar is `830mm` of mercury. The temperature of the jar is reduced by `1%`. The saturation vapour pressures of water at the two temperatures are `30mm` of mercury and `25mm` of mercury. Calculate the new pressure in the jar.

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The correct Answer is:
817 mm of Hg
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