Balance this chemical equation. choose "blank" for the box if no other coefficient is needed. writing the symbol implies "1." al + o2 → al2o3

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

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland