Identify the reactants in the following reaction. Check all that apply. KCl(aq) + NaF(aq) --> KF(aq) + NaCl(aq

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?