What usually happens to the electron configuration of an atom when it forms a covalent bond?

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

What is the percent by mass of oxygen in fe2o3