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An evacuated reaction vessel is filled with NOBr to an initial pressure of 5.0 atm. When...

An evacuated reaction vessel is filled with NOBr to an initial pressure of 5.0 atm. When the system reaches equilibrium according to the reaction below, there are 0.76 atm of Br₂. What is Kp for this reaction?

2 NOBr (g) ⇌ 2 NO (g) + Br₂ (g)

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