How many molecules of NH3 are formed if 2 moles of N2 reacts with excess H2? N2 (g) + 3H2 (g) → 2NH3 (g)

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

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

Amap that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.