A sample of 0.50 moles of gas is placed in a container of volume of 2.5 L. What is the pressure of thegas in torr if the gas is at 25oC? P = 4.89 atm = 3719 torr ... calculate its volume at STP. V = 3.1 L. 14. Ammonia (NH3) is placed in 1.5 L flask ...