Complete and balance the following chemical equations :
`K_(2)Cr_(2)O_(7) +H_(2)SO_(4) +H_(2)S to` _____ + _____ + _____ + _____ + _____

Explanation

To complete and balance the chemical equation for the reaction between potassium dichromate \((K_2Cr_2O_7)\), sulfuric acid \((H_2SO_4)\), and hydrogen sulfide \((H_2S)\), we will follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are:
- Potassium dichromate: \(K_2Cr_2O_7\)
- Sulfuric acid: \(H_2SO_4\)
- Hydrogen sulfide: \(H_2S\)

...