A vessel of volume , `V = 5.0` litre contains `1.4 g` of nitrogen at a temperature `T = 1800 K`. Find the pressure of the gas if `30%` of its molecules are dissociated into atoms into atmos at this temperature.

Explanation

To find the pressure of the gas in the vessel, we will follow these steps:

### Step 1: Calculate the number of moles of nitrogen gas (N₂)
The molar mass of nitrogen (N₂) is approximately 28 g/mol. We can calculate the number of moles (n) using the formula:

\[ n = \frac{\text{mass}}{\text{molar mass}} = \frac{1.4 \, \text{g}}{28 \, \text{g/mol}} = 0.05 \, \text{mol} \]
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