Question

9. A 10-litre flask contains a mixture of oxygen and helium at 27°C. The partial pressure of helium is 10 mm and that of
oxygen is 75 mm Calculate the mole fraction of helium, the weight of helium and of oxygen, assuming ideal behaviour
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Answer 1

Answer:

I don't know okkkkkkkkkkkkk

Answer 2

Answer:

partial pressure divide total presure

10÷85