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Answer:
12. is the pressure equilibrium constant for the decomposition of ammonia at the final temperature of the mixture.
Explanation:

initially
3.0 atm 0 0
At equilibrium
(3.0-2p) p 3p
Equilibrium partial pressure of nitrogen gas = p = 0.90 atm
The expression of a pressure equilibrium constant will be given by :




12. is the pressure equilibrium constant for the decomposition of ammonia at the final temperature of the mixture.
The action is interaction
A homogeneous mixture<span> is a </span>type of mixture<span> in which the composition is uniform and every part of the solution has the same properties. A heterogeneous </span>mixture<span> is a </span>type of mixture<span> in which the components can be seen, as there are two or more phases present.</span>