A molecule is a group of two or more elements held together by chemical bonds. There are 5 molecules and 15 elements are present in the [tex]\bold {5 CO_2 }[/tex].
Molecule:
It is a group of two or more elements held together by chemical bonds. Molecules are electrically neutral.
For example- Carbon dioxide [tex]\bold {CO_2}[/tex], is composed of two elements Carbon and 2 oxygen atoms.
Here, the prefix 5, represents the number of molecules, hence there are 5 molecules of carbon dioxide are present.
So, there are 5 elements of carbon and 10 elements of oxygen. It means a total of 15 elements in the given molecules.
Therefore, there are 5 molecules and 15 elements are present in the [tex]\bold {5 CO_2 }[/tex].
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