Consider the following reaction,

A <===> B in a 1.00L container. At 1.77°C, the molar concentrations of A and B, respectively, 5.838M and 3.945M. Suddenly, 8.744 moles of A are added to the system. What is the change in DG of the system?

Give the answer in kJ?

What does DG stand for? An answer in kJ (kiloJoules) is not possible without more information about the heat of reaction, or what the species are.