Which element has the electron configuration 1s22s22p63s23p3? a. scandium b. arsenic c. phosphorus d. krypton

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

200. ml of 3.00 m nacl solution is diluted to a final volume of 500. ml. what is the molarity of the final solution?

In the reaction between a crushed antacid tablet and vinegar what gas is emitted