An isolated box has a partition dividing it into two equal parts, each with the same volume as the cube from problem 1. Initially there are � gas molecules in the left-hand partition, and the right-hand partition is empty. The partition is then removed. 1. What variable is changing in this case? (I. e. �, �, etc.) 3 2. As you did in parts B and C, write an expression for the change in total entropy in terms of the given variables (�, �,, �-, �, etc.). 3. If again there are # + mol of CO., and each molecule has � = 20 energy blocks, find the change in entropy due to removing the partition.