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Suppose 50

Question 54

Multiple Choice

Suppose 50.0 g of N2O4 is introduced into an evacuated 2.00-L vessel and allowed to come to equilibrium with its decomposition product, N2O4(g) Suppose 50.0 g of N<sub>2</sub>O<sub>4</sub> is introduced into an evacuated 2.00-L vessel and allowed to come to equilibrium with its decomposition product, N<sub>2</sub>O<sub>4</sub>(g) 2NO<sub>2</sub>(g) . For this reaction K<sub>c</sub> = 0.133. Once the system has reached equilibrium, 5.00 g of NO<sub>2</sub> is injected into the vessel, and the system is allowed to equilibrate once again. What is the mass of NO<sub>2</sub> in the final equilibrium mixture? A) 7.8 g B) 12.4 g C) 14.7 g D) 19.7 g E) 15.5 g 2NO2(g) . For this reaction Kc = 0.133. Once the system has reached equilibrium, 5.00 g of NO2 is injected into the vessel, and the system is allowed to equilibrate once again. What is the mass of NO2 in the final equilibrium mixture?


A) 7.8 g
B) 12.4 g
C) 14.7 g
D) 19.7 g
E) 15.5 g

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