1. The problem statement, all variables and given/known data Two containers contain molecules at different temperatures as shown. They are allowed to exchange heat between them, but not with outside. Which of the following statements is most accurate? a) Container #1 looses Internal energy, container #2 gains internal energy b) Container #2 looses Internal energy, container #1 gains internal energy c) Heat flows form container #1 to container #2 d) Heat flows from container #2 to container #1 e) Both a and b are true f) Both b and c are true g) Both b and d are true http://img363.imageshack.us/img363/7761/physics101yx3.jpg [Broken] 2. Relevant equations 3. The attempt at a solution G? Due to diffusion because the molecules are moving from an area of high concentration to an area of low concentration.