The composition of my molecule is a domanic molecule that is made up with two oxygen atoms that are held together by covalent bonds. The properties of my molecule is the chemical formula is O2, molar mass is 32.00 g/mol, boiling point is -183oC, the melting point is -219 C. The relevance of the molecule used in the world today is that without it humans won't be able to live because they need to breathe O2 in order for it to pass through many organisms because it is a critical role for the human body system. Not only humans need oxygen but animals need oxygen too. The oxygen is generated by plants and many types of microbes.

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