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H2O
The little 2 is a subscript that tells you that there are 2 Hydrogen atoms in the compound. There is no 1 after the Oxygen because if there is no subscript, there is an understood 1 atom in the compound.
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoThe formula for hydrogen is "H". You may be asking about the formula for water, which is "H2O". This means that there are two atoms of hydrogen and one atom of oxygen in EVERY water molecule.
Wiki User
∙ 14y agoYes it is a subscript, the elements should also be represented with capital letters.
H2O
Wiki User
∙ 11y ago2 repersents the number of atom of hydrogen in the compound of H2O
it means that it took 2 atoms of hydrogen to make both oxygen and hydrogen stable. These are called ionic compounds
Wiki User
∙ 14y agoSubscript.
Wiki User
∙ 11y agoa subscript
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How many atoms of Hydrogen are present in a water molecule?
It is common knowledge that the chemical formula for water is H2O. In chemical formulae, subscripts apply to the letters that they go after. So there are 2 Hydrogens in a single water molecules.
What is a molecule of water made up of?
2 atoms of hydrogen & 1 atom of oxygen, hence the formula H2O
What do subscripts in a chemical formula indicate?
Subscripts indicate the number of the preceding element Ie. in H2O there are two hydrogens (H) and one oxygen (O) or in C6H12O8 there are six carbon (C) twelve hydrogen (H) and eight oxygen (O) The number of atoms of the same element in the molecule
What is a coefficient in physical science?
a coefficent in physical science means:a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product that are involved in a reaction
How many sulfur atoms are in a molecule of sulfuric acid (H2SO4)?
We know from looking at the molecular formula that one mole of molecules of H2SO4 contains 2 moles of atoms of hydrogen, 1 mole of atoms of sulfur and 4 moles of atoms of oxygen.
How many hydrogen in a chemical formula?
The number of hydrogen atoms of present in a hydrogen molecule are 2.
Explain the number and kinds of atoms in the formula H2O2?
2 parts hydrogen and 2 pArts oxygen
If empirical formula is C2H5 what is molecular formula?
The molecular formula would have to be C4H10 as the number of hydrogen atoms cannot exceed 2+2X where X is the number of carbon atoms.
How does the formula of an alkene change when you add an extra carbon atom?
The number of hydrogen atoms inceases by 2. The formula for an alkane is always C(n)H(2n+2), So the number of hydrogen atoms is always 2 more than the double of carbon atoms. *^^*
What do the subscripts in the formula for ethane represent?
subscripts in a formula indicates the number of atoms in a molecule or the ratio of elements in a compound.
What is the number 2 below of the formula called?
a subscript
What does the number 2 called in h20?
Assuming you're talking about the chemical formula for water (H2O) - It means that for every atom of Oxygen (O) there are two atoms of Hydrogen (H)
The number 2 in the formula h20 tells you that each unit of this compound contains two?
Hydrogen atoms
How many moles of hydrogen are in 0.80moles of quinine?
You can figure this question out by looking up quinine to find its chemical formula. The number of moles of hydrogen will be the number of hydrogen in the chemical formula. Once you see the chemical formula is C20H24N2O2 then you know that there are 24 moles of hydrogen for every one mole of quinine.
How do you write the formula for lithium hydrogen sulfite?
LiHSO3 is the formula of Lithium Hydrogen sulfite.
What is a recipe for a particular chemical compound called?
It is called a Formula. An example is H2O: 2 atoms of hydrogen and 1 atom of oxygen.
What is the formula of the hydrogen atom?
the chemical formula of a hydrogen molecule is written H2 ( the 2 is meant to be small )
