SOLUTION: Balancing equations challenge - Studypool - Free Printable

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- The symbol "O" represents the element Oxygen.
- In the formula CO₂, there is 1 atom of Carbon (C) and 2 atoms of Oxygen (O).
- In the formula 5H₂, there are 10 atoms of Hydrogen (H).
- In the formula 2C₄H₁₂, there are 8 atoms of Carbon (C) and 24 atoms of Hydrogen (H).
- In the formula 2Na₂SO₄, there are 4 atoms of Sodium (Na), 2 atoms of Sulfur (S), and 8 atoms of Oxygen (O).
- In the chemical equation 2Mg + O₂ → 2MgO:
- Reactants: 2Mg and O₂
- Product: 2MgO
- The "2" in front of Mg and MgO is a coefficient, indicating two atoms of magnesium and two formula units of magnesium oxide.
- The "2" in O₂ is a subscript, indicating two atoms of oxygen bonded together in a molecule.

Parent Tip: Review the logic above to help your child master the concept of formula challenge worksheet answers.

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