Element a have electronic configuration 1s2 2s² 2p6 3s2 3p6 4s² 3d10 4p6 5s2 4d1 Determine valence electrons, valence electronic configuration and group for a

Silica, sio2, is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when silicon is exposed to o2 gas at an elevated temperature. at 900˚c, it takes 90 minutes for the oxygen to diffuse from the surface to form a 0.06 micron (0.06 x 10-6 m) thick layer of sio2 on

0.66y = 0.9x + 0.48 if y has a value of 108.45 what is the value of x?

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange