## Chemistry: The Central Science (13th Edition)

$Al_2S_3 + 6 H_2O ->2Al(OH)_3 + 3H_2S$
1. Write the unbalanced equation: $Al_2S_3 + H_2O -> Al(OH)_3 + H_2S$ 2. Now, balance the number of Aluminum atoms : $Al_2S_3 + H_2O ->2Al(OH)_3 + H_2S$ 3. Balance the number of Sulfur atoms: $Al_2S_3 + H_2O ->2Al(OH)_3 + 3H_2S$ 4. Balance the number of Hydrogen atoms: $Al_2S_3 + 6H_2O ->2Al(OH)_3 + 3H_2S$ 5. We dont need to change anything to balance the number of Oxygen atoms: $Al_2S_3 + 6H_2O ->2Al(OH)_3 + 3H_2S$