An insulated container is separated into two chambers of equal volume by a thin partition. On one side of the container there are twelve ¹³¹Xe atoms, on the other side there are twelve ¹³²Xe atoms. The partition is then removed. Calculate the change in entropy of the system after equilibrium has been established (that is, when the ¹³¹Xe and ¹³²Xe atoms are evenly distributed throughout the total volume).