13.Which shows the order of increasing ionization energy? a. Si, Al, Mg, Na
b. Ga, Ge, As, Se
c. Be, Mg, Ca, Sr
d. F, Cl, Br, I

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

Energy is released during which phase changes? check all that apply. boiling condensing depositing freezing melting subliming

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present