CP Rest Of Balancing Chemical Reaction Homework

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Balance the following chemical reactions by writing the correct coefficient for each reactants and product.

1) ____Al₂Ol_{3 (s)}    --->  ____Al_(s)  + ____O_{2 (g)}

2) ____Cu₁Cl_{2 (s)}  +  ____H₂S_{1 (aq)}   -->  ____H₁Cl_{1 (aq)}  +  ____Cu₁S_{1 (aq)}

3) ____Na₁Br_{1 (s)}  +  ____Cl_{2 (g)}  --->  ____Na₁Br_{1 (s)}

4)