500cc of a hydrocarbon gas burnt in excess of oxygen yields 2500cc of `CO_(2)` and 3 litres of `H_(2)O` vapour, all the vapours being meausred at the same temperature and pressure. What si the formula of the hydrocarbon gas?

Explanation

To determine the formula of the hydrocarbon gas, we can follow these steps:

### Step 1: Write down the given data
- Volume of hydrocarbon gas (CₓHᵧ) = 500 cc
- Volume of carbon dioxide (CO₂) produced = 2500 cc
- Volume of water (H₂O) produced = 3 liters = 3000 cc

### Step 2: Use the stoichiometry of combustion
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