A sample of oxygen gas was collected by displacement of water in a gas collection apparatus. The total pressure in the collection vessel was 744.2 torr, the temperature was 26.0 °C, and the vessel contained 522 mL of the collected gas. How many moles of oxygen were collected? (At 26.0 °C, the vapor pressure of water is 25.2 torr.)
A) 0.0201 moles
B) 0.0215 moles
C) 0.0842 moles
D) 0.151 moles
E) 0.231 moles
Correct Answer:
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