Find the frequency of the photons being emitted by Oxyanion nitrate

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?

How can the periodic table be used to predict the behavior of elements?

Adirect relationship can be represented by: a curve a pie chart