How many moles are in 3.28 x 10²³ Na atoms?

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

When a scientific theory has been tested and proved by the scientific community, it becomes a law

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?