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Which statement describes how chemical formula such as H20 represent compounds check all that apply

They show the types of molecules that make up an atom

They show the elements of make up a compound

They show the 3 dimensional shape of a molecule

They show the types of atoms that make up a molecule

They should the number of each type of atom in a molecule

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Answer:

  • They show the elements of make up a compound
  • They show the types of atoms that make up a molecule
  • They show the number of each type of atom in a molecule

Explanation:

To answer this question we need to know what is a compound.

  • A compound is a substance that is made by two or more atoms of different elements that are chemically combined.
  • A chemical formula of a compound is a formula that shows the elements that make up a compound and also the types of atoms that make up the molecule.
  • Additionally, the chemical formula shows the number of each type of atom in a molecule.
  • In this case, the chemical formula of a molecule of H₂O shows that it is made up of one hydrogen atom and two oxygen atoms.

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