The complete combustion of a hydrocarbon gives `CO_2` and `H_2O`. In the balanced chemical equation, the coefficients of `CO_2` and `H_2O` are 3 and 4, respectively. Find out the formula of the hydrocarbon.

Explanation

To find the formula of the hydrocarbon that undergoes complete combustion to yield carbon dioxide (CO₂) and water (H₂O) with coefficients of 3 and 4 respectively, we can follow these steps:

### Step 1: Understand the combustion reaction
When a hydrocarbon combusts completely, it reacts with oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O). The general form of the combustion reaction can be written as:
\[ \text{Hydrocarbon} + O_2 \rightarrow CO_2 + H_2O \]

### Step 2: Write the balanced equation
Given that the coefficients of CO₂ and H₂O are 3 and 4 respectively, we can write the balanced equation as:
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