The empirical formula of the compound is `C_(2)H_(5)`. It has a vapour density of 29. Determine the relative mass of the compound and hence, its molecular formula.

Explanation

To determine the molecular formula of the compound with an empirical formula of \( C_2H_5 \) and a vapor density of 29, we can follow these steps:

### Step 1: Calculate the Molar Mass from Vapor Density
The vapor density (VD) is related to the molar mass (M) of the compound by the formula:
\[ \text{Molar Mass} = 2 \times \text{Vapor Density} \]
Given that the vapor density is 29, we can calculate the molar mass:
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