A compound of empirical formula `CH_(2)O` has a V.D. of 30. Write down its molecular formula.

Explanation

To determine the molecular formula of a compound with the empirical formula \( CH_2O \) and a vapor density of 30, we can follow these steps:

### Step 1: Calculate the Molecular Mass
The relationship between molecular mass (M) and vapor density (VD) is given by the formula:
\[ M = 2 \times \text{VD} \]
Given that the vapor density is 30, we can substitute this value into the equation:
...