Complete and balance the following chemical reactions:
anhydrous potassium nitrate is heated with excess of metallic potassium.
`KNO_(3)(s)+K(s)rarr`

Explanation

To complete and balance the chemical reaction of anhydrous potassium nitrate (KNO₃) with excess metallic potassium (K), we will follow these steps:

### Step 1: Write the Unbalanced Reaction
The initial reaction can be written as:
\[ \text{KNO}_3 (s) + \text{K} (s) \rightarrow \]

### Step 2: Identify the Products
When potassium nitrate is heated with metallic potassium, it decomposes to form potassium oxide (K₂O) and nitrogen gas (N₂). Therefore, the products of the reaction are:
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