The above equilibrium was established in a 1.00-L container at a certain temperature. Once the system came to equilibrium, it was found that the following amounts of materials were present in the container:${\text{(NH}}_{4}{\text{)}}_{2}{\text{CO}}_{3} = 8.00\text{ moles},$${\text{NH}}_{3} = 4.00\text{ moles},$${\text{CO}}_{2} = 2.00\text{ moles},$and ${\text{H}}_{2}\text{O} = 2.00\text{ moles}.$Determine the value of Kc at this temperature.

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