1. The problem statement, all variables and given/known data A rigid, perfectly insulated container has a membrane dividing its volume in half. One side contains a gas at an absolute temperature To and pressure Po, while the other half is completely empty. Suddenly a small hole develops in the membrane, allowing the gas to leak out into the other half until it eventually occupies twice its original volume. In terms of To and Po, what will be the new temperature and pressure of the gas when it is distributed equally in both halves of the container? 2. Relevant equations None. 3. The attempt at a solution I have no idea how to explain this answer. I don't know how to approach this. Please help.