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Refer to the following equation and data and answer question.

Refer to the following equation and data and answer question.
  
CO(g)              +          3H2(g)                CH 4(g)+          H2O (g)            
  
(Note:  all species are in gas phase)
  
At a certain temperature, 0.100 mole CO and 0.300 mole H2 are placed in a 1.00 L vessel. After the reaction has reached equilibrium, the vessel contains 0.0387 mol H2O.
What is Kc?

Hint: You have been given an equilibrium concentration, you can use it to find x and then all equilibrium concentrations. Then-- set up Kc expression.



85.2  



3.93



7.82 x 10 -3  



8.78 x 10 -4



4.58 x 10 5  



73.9



6.15   x 10-9  



8.67 x 10 2

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