science
2006-08-25 01:41:39 · 21 answers · asked by minto_scorpio 1 in Science & Mathematics ➔ Chemistry
H2O is the common formula but there are others....
Semiheavy water, HDO, also exists whenever there is water with hydrogen-1 (or protium) and deuterium present in the mixture. This is because hydrogen atoms (hydrogen-1 and deuterium) are rapidly exchanged between water molecules. Water containing 50% H and 50% D actually contains about 50 % HDO and 25 % each of H2O and D2O, in dynamic equilibrium. Semiheavy water, HDO, occurs naturally in regular water at a proportion of about 1 molecule in 3200.
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Heavy-oxygen water
A common type of heavy-oxygen water H218O is available commercially for use as a non-radioactive isotopic tracer (see doubly-labeled water for discussion), and qualifies as "heavy water" insofar as having a higher density than normal water (in this case, similar density to deuterium oxide). Even more expensively, water is available in which the oxygen is 17O. However, these types of heavy-isotope water are rarely referred to as "heavy water," as they do not contain the deuterium which gives D2O its characteristically different nuclear and biological properties. Heavy-oxygen waters with normal hydrogen, for example, would not be expected to show any toxicity whatsoever (see discussion of toxicity below
2006-08-25 03:55:05 · answer #1 · answered by Charity 3 · 0⤊ 1⤋
H 2 O
2006-08-25 08:55:32 · answer #2 · answered by WC 7 · 0⤊ 0⤋
Water has the chemical formula H2O meaning that one molecule of water is composed of two hydrogen atoms and one oxygen atom. It can also be described ionically as HOH, with a hydrogen ion (H+) that is bonded to a hydroxide ion (OH-). It is in dynamic equilibrium between the liquid and vapor states at standard temperature and pressure. At room temperature, it is a nearly colorless, tasteless, and odorless liquid. It is often referred to in the sciences as the universal solvent and the only pure substance found naturally in all three states of matter.
2006-08-25 09:08:06 · answer #3 · answered by Soham 1 · 0⤊ 0⤋
Water has the chemical formula H2O meaning that one molecule of water is composed of two hydrogen atoms and one oxygen atom. It can also be described ionically as HOH, with a hydrogen ion (H+) that is bonded to a hydroxide ion (OH-). It is in dynamic equilibrium between the liquid and vapor states at standard temperature and pressure. At room temperature, it is a nearly colorless, tasteless, and odorless liquid. It is often referred to in the sciences as the universal solvent and the only pure substance found naturally in all three states of matter.
2006-08-25 08:46:49 · answer #4 · answered by rocky 3 · 0⤊ 0⤋
H2O as in 2 hydrogens 1 oxygen.
2006-08-25 08:59:04 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The chemical formula for water is H2O. This means there are 2 hidrogens and 1 oxygen.
2006-08-25 08:58:09 · answer #6 · answered by antonette_lawrence 2 · 0⤊ 0⤋
H2O, with the 2 a subscript.
2006-08-25 08:48:05 · answer #7 · answered by flip103158 4 · 0⤊ 0⤋
H20 - 2parts hydrogen I part water
(the 2 is a subscript of H)
2006-08-25 08:49:53 · answer #8 · answered by david g 2 · 0⤊ 0⤋
H2O, meaning it's got two hydrogen atoms and 1 oxygen atom per molecule.
2006-08-25 08:44:56 · answer #9 · answered by Chris 2 · 1⤊ 0⤋
first off all it is spelt chemical formula
it is H2O (2 atoms of hydrogen [H2] 1 atom of Oxygen [O])
2006-08-25 20:40:15 · answer #10 · answered by Anonymous · 0⤊ 0⤋