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Water's chemical breakdown is made up of H2O. That's two parts hydrogen and one part oxygen.

Hydrogen is a colorless, highly flammable gaseous element, the lightest of all gases and the most abundant element in the universe, used in the production of synthetic ammonia and methanol, in petroleum refining, in the hydrogenation of organic materials, as a reducing atmosphere, in oxyhydrogen torches, and in rocket fuels. It's atomic number is 1; atomic weight 1.00794; melting point −259.14°C; boiling point −252.8°C; density at 0°C 0.08987 gram per liter; valence 1.

Oxygen is a nonmetallic element constituting 21 percent of the atmosphere by volume that occurs as a diatomic gas, O2, and in many compounds such as water and iron ore. It combines with most elements, is essential for plant and animal respiration, and is required for nearly all combustion. Atomic number 8; atomic weight 15.9994; melting point −218.4°C; boiling point −183.0°C; gas density at 0°C 1.429 grams per liter; valence 2.

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16y ago
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16y ago

two hydrogen(notice the hydro... Hydro normally refers to water) and one Oxygen thus, making H2O

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15y ago

If you mean regular water, two hydrogen molecules and one oxygen. But, in city water treatment facilities, fluoride and a small amount of chlorine may be added in.

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14y ago

The molecular formula for water is H2O. "H" is the abbreviation for hydrogen, and "O" is the abbreviation for oxygen. Thus water is two parts hydrogen for each one part of oxygen.

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Q: What are the contents in water?
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