Draw 1-bromo-2-iodoethane. looking through the c-c bond, draw all 6 rotational conformations and newman projections. label the conformations as anti, gauche or eclipsed. then, rank them in terms of lowest to highest energy. explain your reasoning in 2-3 sentences.

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?