A chamber is divided into two halves by a non insulating movable partition. Air in one side is at a higher pressure than air in the other side. The partition is moved causing the higher pressure side to expand and the lower pressure side to contract. What is the sign, positive or negative, of the change in entropy for; the high pressure side, the low pressure side, and the total of the two

( -, + , + )

Explanation:

The sign of the change in entropy for

High pressure side , low pressure side and the Total of the two =

( -, + , + )

The expansion of the Higher pressure side of the chamber will lead to a negative (- )change in entropy while the contraction of the lower pressure side of the chamber will cause a positive ( + ) increase in the change of entropy

he would use the colour black

it is stable as it is in group 0 which have full outer shells of electrons