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NH3 is heated initially at 15 atm from 2...

`NH_3` is heated initially at 15 atm from `27^@C` to `127^@C` at constant volume.At `127^@C` equilibrium is established.The new pressure at equilibrium at `127^@C` becomes 30 atm for the reaction `2NH_3(g)hArrN_2(g)+3H_2(g)`
Then find the % of moles of `NH_3` actually decomposed.

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