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H20 is a chemical formula. H stands for Hydrogen, O stands for Oxygen. An Oxygen atom has a different makeup than a Hydrogen atom. So H20 means there are 2 hydrogen atoms and 1 Oxygen atom. H20 is essentially H201, but the 1 is silent. Atoms make up everything.. Every substance.. etc. You'll learn about it in 8th grade.
Wiki User
∙ 12y ago
Wiki User
∙ 15y agoIn H2O, the subscript 2 (that's the small 2 hanging below the line) means that 2 atoms of hydrogen (the H just ahead of the subscript 2) combine with one atom of oxygen (O) to form a water molecule.
Wiki User
∙ 15y agoH2O is the chemical formula for water. "H2" means there are 2 Hydrogen atoms, and the O represents the Oxygen atom. Thus, water molecules are made up of one oxygen and two hydrogen atoms.
Because there is only one Oxygen atom, we do not bother with the 1 that would naturally go after it (ie H2O1 means the same thing)
Wiki User
∙ 13y agoThe H means hydrogen and 0 means oxygen. The 2 means there is two parts of hydrogen surrounding oxygen!! lol!!! It's True!!
not 2 parts of hydrogen, two atoms of hydrogen :]
Wiki User
∙ 15y agoThe 2 in 'H2' means that there are two atoms of hydrogen in the hydrogen molecule.
Wiki User
∙ 14y agoThe number 2 in the chemical formula H2O refers to the number of hydrogen atoms in a water molecule. One water molecule consists of one oxygen atom and two hydrogen atoms.
Wiki User
∙ 13y agoThe 2 in h2o should actually be a subscript like this h2o and it shows that in every molecule of h2o there are 2 atoms of hydrogen for every atom of oxygen
Wiki User
∙ 8y agoThe number 2 in the chemical formula H2O refers to the number of hydrogen atoms in a water molecule. One water molecule consists of one oxygen atom and two hydrogen atoms.
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What is the number of molecules in 16.75 grams of H2O?
301.8g H2O
Li plus H2O yields?
2 Li + 2 H2O ------> 2 LiOH + H2
Cao plus h2o?
CaO + H2O--> Ca(OH)2
What is the balanced equation for sulfur dioxide and water vapor?
Equation SO2 + H2O ----> H2SO3 (Sulfurous acid) Having water as vapour does not change the formula in anyway so keep it simple
Balance h2o2 h2o o2?
The balanced equation for this decomposition reaction is 2 H2O2 -> 2 H2O + O2.
Number of sigma bonds in H2O?
2
What is the number of shared electrons pairs in H2O?
2
What is the oxidation number of oxygen in H20?
Water, or H2O is a free-standing neutral compound, so it's oxidation number is 0. Its atoms have oxidation number though. Hydrogen's oxidation number in water is +1, and oxygen's is -2.
How do you tell the number in a scientific equation?
Its a scientific equation when it is like this (H2O) and it has to have a number and it has to mean somthing
What is the lower right number on a chemical symbol?
the number is 2 in h2o
What does the number two mean in waters formula H2O?
Two hydrogen atoms.
What is oxidation number oxygen in h2o?
-2 for O and +1 for H
What is the oxidation number of 6H20?
H2O. +1 for each H, -2 for O.
How can the number of atoms of an individual element be determined by using a chemical formula?
The subscript number after the element symbol, such as the 2 in H2O, tells how many atoms in each molecule. In the example, the 2 refers to H (hydrogen). If there is no number present, then 1 is implied. So H2O has 2 hydrogen and 1 oxygen.
What is the coefficient of H(2)O?
If there is no number, then a "1" is implied.
What is the number of molecules in 16.75 grams of H2O?
301.8g H2O
How many subscripts does the formula for water have?
The formula for water is H2O, the single subscript is the number 2.
