Magnesium has two electrons in its outer shell and chlorine has seven electrons in its outer shell how are the electrons transferred between these atoms

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

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?