A mixture of helium, nitrogen, and oxygen has a total pressure of 765 mmHg . The...
A mixture of helium, nitrogen, and oxygen has a total pressure of 765 mmHg . The partial pressures of helium and nitrogen are 244 mmHg and 202 mmHg , respectively. What is the partial pressure of oxygen in the mixture?
Homework Answers
Use Dalton’s law of partial pressure
Total pressure = p(He) + p(N2) + p(O2)
765 mmHg = 244 mmHg + 202 mmHg + p(O2)
p(O2) = 319 mmHg
Answer: 319 mmHg
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