write the balanced chemical equation for the reaction that occurs when BaCl2.2H2O is heated.
See your post above.
To write the balanced chemical equation for the reaction that occurs when BaCl2·2H2O is heated, we need to know the individual reactants and products.
BaCl2·2H2O is a hydrated compound, containing two water molecules per formula unit. When it is heated, the water molecules will be released as steam, leaving behind the anhydrous (without water) form of barium chloride, BaCl2.
The balanced chemical equation can be written as follows:
BaCl2·2H2O(s) → BaCl2(s) + 2H2O(g)
In this equation, (s) represents a solid, and (g) represents a gas.