Because it has molecules of water in it
Silica is not an element. It is a compound made up of both silicon and oxygen.
Define the two vectors as
Then if vector c is defined by
then
Example:
If
then
When atoms combine to share covalent bonds<span>, the resulting collection of atoms </span>is<span> called a molecule. We </span>can<span> therefore say that a molecule </span>is<span> the simplest unit of a </span><span>covalent compound
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