user
What is the equilibrium constant (Kc) at 25°C for the following gas-phase reaction:
2NO2(g) ⇄ 2NO(g) + O2(g)
Given the concentrations at equilibrium: [NO2] = 0.050 M, [NO] = 0.035 M and [O2] = 0.020 M.
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

The answer is 42.

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