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Certain amount of N(2)O(4) is taken in a...

Certain amount of `N_(2)O_(4)` is taken in a closed vessel at 1 atm and `27^(@)C`. Heating to `327^(@)C`, 20%of the gaseous substance decomposes to give its monomer. Calculate the final pressure in the vessel. What is vapour density of gaseous mixture at `327^(@)C` ?

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2.4 atm, 38.4
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