Vapour density of a gas is 22. What is its molecular mass?

Options

A. `33`
B. `22`
C. `44`
D. `11`

Explanation

To find the molecular mass of a gas given its vapor density, we can use the relationship between vapor density and molecular mass. The formula is:

\[ \text{Molecular Mass} = 2 \times \text{Vapor Density} \]

### Step-by-step Solution:

1. **Identify the given information**:
- Vapor density of the gas = 22.

2. **Use the formula to find molecular mass**:
- According to the formula, we substitute the vapor density into the equation:
\[ \text{Molecular Mass} = 2 \times 22 \]

3. **Calculate the molecular mass**:
- Performing the multiplication:
\[ \text{Molecular Mass} = 44 \]

4. **Conclusion**:
- The molecular mass of the gas is 44.

### Final Answer:
The molecular mass of the gas is 44.