Asked by Anonymous
                A sample of dry air at 28 degress celcius in a sealed flask has a pressure of 90kPa. Which is the most likely the partial pressure of Oxygen, O2(g) in the flask?
a) 70kPa
b) 19kPa
c) 3Pa
d) 0.8kPa
Can you explain how you got this answer?
            
        a) 70kPa
b) 19kPa
c) 3Pa
d) 0.8kPa
Can you explain how you got this answer?
Answers
                    Answered by
            bobpursley
            
    The mole fraction of oxygen molecules in dry air is 0.2095.
Daltons Law:
Po2/90=.2095
Po2=18.8 kPa
    
Daltons Law:
Po2/90=.2095
Po2=18.8 kPa
                    Answered by
            Anonymous
            
    How did you get the mole fraction?
    
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