9. A 4.48 L sealed vessel at 0 degrees C contains 0.5 moles of
oxygen, 0.1 moles of carbon dioxide, and 0.4 moles of
nitrogen gas. What is the total pressure in the vessel?
a) 5.0 atm
b) 2.5 atm
c) 2.0 atm
d) 0.1 atm