Which area in the united states has the highest average number of thunderstorms per year

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

What is the molar mass of a gas that has density of 2.054 g/l

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?