It depends what computer system you're using. On this one (wiki.answer.com) you first type just H2O, then you highlight the '2', then you click on x2 in the set of items above the text. To highlight the '2' move the cursor to the right side of it, then push and hold the Shift key down and then move the cursor over to the left.
H2O represents the chemical formula for water, which is a chemical compound. In terms of type of equation, it is a molecular formula that shows the number and type of atoms present in a molecule of water.
H2o or water
The chemical symbol for oxygen is "O." The chemical formula for water is "H2O."
h2o
Water is a chemical compound - H2O.
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Water is a chemical compound (H2O) not a "change".
you can get them on eBay series one just type h2O just add water and it's there
To type "H2O", you would simply type the letter "H", followed by the number "2" and then the letter "O". This represents the chemical formula for water, indicating that each molecule of water consists of two hydrogen atoms and one oxygen atom.
there are know vitamins in water it is just composed of H2O
Pure water is H2O, liquid at room temperature.
it is water