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You are in a submarine, the hallway in front of you is connected to two rooms. the hallway has a capacity of 300.0 l and is filled with 35.0 atm of helium gas. room a has a capacity of 200.0 l and holds 20.0 atm of nitrogen gas. room b has 40.0 atm of oxygen gas in 180.0 l. a. if you open both rooms to the hallway, what would be pressure of each gas in the combined space of the hallway and two rooms? b. what would be the mol fraction of oxygen in that gas? c. after mixing the gases, if you let gas escape until the total pressure in the hallway was 1.2 atm, what would be the final partial pressure of oxygen?
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