A sealed vessel contains 45% oxygen, 30% carbon dioxide, and 25% nitrogen gas. The total pressure of the gas mixture is 4 atmospheres. What is the partial pressure of the nitrogen? . 1.8 atm b. 1.2 atm c. 1.0 atm d. 2.0 atm If nitrogen exerts a 17atm of pressure in a mixture and the total pressure of the system is 30 atm, what would be the mole fraction of nitrogen in the mixture? a. 1.50 atm b. -13 atm c. 0.57 atm d. 1.76 atm Compute for the mole fraction of oxygen exerting a pressure of 6.28 atm in a gas mixture which has a total pressure of 25 atm. a. 1.00 atm b. 0.25 atm C. 1.25 atm d. 18.72 atm