Use the electron-dot notation to demonstrate the formation of an ionic compound involving the elements Al and S

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

Which substance has non polar covalent bonds

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?