Oxide refers to a binary compound of oxygen with a more electropositive element or group. Oxide refers to chemical compound containing oxygen and one other chemical element. Oxides are widely and abundantly distributed in nature. Water is the oxide of hydrogen. Silicon dioxide is the major component of sand and quartz. Carbon dioxide is given off during respiration by animals and plants.
W = (w2 - w1) grams
Ew=[w2 / (w2 - w1)] * atomic weight of oxygen