9. If a container holds 1.00 mole of oxygen gas and 3.00 mole of argon gas and the total pressure is 800 Torr, what is the partial pressure of each of the gases? 10. If a container holds 1.50 moles of nitrogen gas and 2.50 moles of helium gas at a total pressure of 760 mm Hg, what is the partial pressure of each of the gases? 11. A 22.4 liter container has a total pressure of 760 Torr at 0.0C and contains three different gases, nitrogen, helium and argon. If the partial pressure of nitrogen is 250 Torr and the partial pressure of argon is 130 Torr, what is the number of moles of helium in the tank