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Anonymous asked in Science & MathematicsChemistry · 1 month ago

chemistry help?

The molecular-level representation of a mixture of gases A, B and C is shown to the below. The partial pressure of gas B is 46.3 kPa.

What is the mole fraction of gas B? 

What is the total pressure in kPa? 


What is the partial pressure of gas C in kPa? 


Attachment image

1 Answer

  • 1 month ago

    Counting molecules in the diagram, the mole ratio of gases seems to be:

    4:2:5 for A:B:C

    2 / (4 + 2 + 5) = 0.18 (the mole fraction of B)

    (46.3 kPa B) / 2 x 11 = 255 kPa

    (46.3 kPa B) x (5 mol C / 2 mol B) = 116 kPa  C

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