At STP 5.6 "litre" of a gas weigh 8 g. The vapour density of gas is:

Options

A. 32
B. 40
C. 16
D. 8

Explanation

To find the vapor density of a gas given that at STP (Standard Temperature and Pressure) 5.6 liters of the gas weighs 8 grams, we can follow these steps:

### Step 1: Calculate the number of moles of the gas
At STP, 22.4 liters of any gas corresponds to 1 mole. Therefore, we can find the number of moles in 5.6 liters using the following formula:

\[ \text{Number of moles} = \frac{\text{Volume of gas at STP}}{22.4 \text{ L/mol}} \]
...