what is the chemical formula of dihydrogen oxide
H2O (water)
http://en.wikipedia.org/wiki/Water_(molecule)
The chemical formula for dihydrogen oxide is H2O.
To understand how to obtain this answer, we need to break down the name "dihydrogen oxide." The prefix "di-" indicates that there are two atoms of hydrogen, and the term "oxide" refers to a compound containing oxygen.
To determine the chemical formula, we use the knowledge that the chemical symbol for hydrogen is H, and the chemical symbol for oxygen is O. Since there are two hydrogen atoms present, we represent them as H2. Combining the two hydrogen atoms (H2) with one oxygen atom (O) yields the chemical formula H2O.