The given reaction is \(2NO_2(g) \rightleftharpoons 2NO(g) + O_2(g)\), and the equilibrium constant \(K_p = 158\) at 1000K. We are given \(P_{NO} = 0.400\) atm and \(P_{O_2} = 0.270\) atm. We need to find the equilibrium pressure of \(NO_2\), let's denote it as
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