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19-07-2020
Chemistry

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Balance the following chemical equations.

1) Mg + O2 —> MgO
2) SO2 + O2 —> SO3
3) Na + Cl2 —> NaCl
4) K + O2 —> K2O

Respuesta :

19-07-2020

Answer:

Balancing the equations means adding coefficients to the reactants or products so that there is an equal amount of atoms of an element on both sides of the equation.

1) 2Mg + O₂ ⇒ 2MgO

2) 2SO₂ + O₂ ⇒ 2SO₃

3) 2Na + Cl₂ ⇒ 2NaCl

4) 4K + O₂ ⇒ 2K₂O

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