The structural formula for a water molecule is

Structural formula shows how atoms are arranged and are bonded to each other. The bonds that holds the atoms in water is called covalent bond where electrons are shared by the atoms. A water molecule has a tetrahedral arrangement and has a bent shape with angles of 107.5 degrees.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.