HOW TO Draw the electron-dot structure for OF2. draw the molecule by placing the atoms on the grid and connecting them with bonds. include all lone pairs of electrons.

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?