You can form 9.20 L of NH₃ gas at 93.0 °C and 37.3 kPa or 2.56 L at STP.
The balanced chemical equation is
N₂ + 3H₂ → 2NH₃
Since all substances are gases, we can use litres instead of moles in our calculations.
You don't specify the pressure and temperature of the NH₃, so I will calculate its volume in two ways.
At 93.0 °C and 37.3 kPa
STP is 100 kPa and 273.15 K
We can use the combined gas laws to calculate the volume at STP.