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Which of the following chemical formulas contains the most total atoms?​

CO​

NaCl​

NaHCO3​

H2O

1 answer

To determine which chemical formula contains the most total atoms, we can break down each formula and count the number of atoms in each:

  1. CO (Carbon monoxide)

    • 1 Carbon (C) + 1 Oxygen (O) = 2 total atoms

  2. NaCl (Sodium chloride)

    • 1 Sodium (Na) + 1 Chlorine (Cl) = 2 total atoms

  3. NaHCO3 (Sodium bicarbonate)

    • 1 Sodium (Na) + 1 Hydrogen (H) + 1 Carbon (C) + 3 Oxygens (O) = 1 + 1 + 1 + 3 = 6 total atoms

  4. H2O (Water)

    • 2 Hydrogens (H) + 1 Oxygen (O) = 2 + 1 = 3 total atoms

Now, let's compare the total number of atoms:

  • CO: 2 atoms
  • NaCl: 2 atoms
  • NaHCO3: 6 atoms
  • H2O: 3 atoms

The formula with the most total atoms is NaHCO3, with 6 total atoms.