2
You can determine the number of atoms of each element in a compound by using the chemical formula of the compound. The subscripts in the formula indicate the number of atoms of each element. For example, in H2O (water), there are 2 hydrogen atoms and 1 oxygen atom.
same number of each element
the name of the elements are found on most periodic tables and each element is a separate type of atom the number found by an element hereorhere shows the number of atoms of each element the molecule has
each element has one atom of the element's name
In this case, the equation is balanced.
there are atoms inside of each element
Water molecule (H2O) has 2 hydrogen atoms and 1 oxygen atom.
It is important to know the relative number of atoms of each element in a compound for the chemical composition.
The chemical formula shows you this. The subscripted number next to each element shows how many atoms are present in a molecule or formula unit. If no number is shown, then only one atom of that element is present.
2 Carbon atoms, 4 Hydrogen atoms, 2 Oxygen atoms
The atomic number of an element tells you how many protons an atom of that element contains. This number is unique to each element and is found on the periodic table. The number of protons in an atom determines the element's identity.
In this case, the equation is balanced.