Final answer:
The chemical equation for the melting, dehydration, and decomposition process of magnesium nitrate hexahydrate is: Mg(NO3)2 * 6H2O → Mg(NO3)2 + 6H2O.
Step-by-step explanation:
The chemical equation for the melting, dehydration, and decomposition process of magnesium nitrate hexahydrate can be written as follows:
Mg(NO3)2 * 6H2O → Mg(NO3)2 + 6H2O
In this reaction, the hexahydrate compound (Mg(NO3)2 * 6H2O) loses its water molecules upon heating, resulting in the formation of anhydrous magnesium nitrate (Mg(NO3)2) and water (H2O).