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8 February, 13:12

A tank is filled with a mixture of helium, oxygen, and carbon dioxide. The pressure inside the tank is 101.3 kPa. What is the partial pressure of oxygen, given the following partial pressures? A. 16.9 kPa B. 17.2 kPa C. 84.1 kPa D. 101.3 kPa

p he=84kPa

p co2 = 0.1 kPa

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Answers (1)
  1. 8 February, 15:41
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    The answer to your question is p O2 = 17.2 kPa, letter b

    Explanation:

    Remember that in a mixture of gases, total pressure is equal to the sum of the pressure of individual gases.

    Then

    Pt = p He + p CO2 + p O2

    Data

    Pt = 101.3 kPa

    pHe = 84kPa

    pCO2 = 0.1 kPa

    p O2 = ?

    Substitution

    101.3 = 84 + 0.1 + pO2

    pO2 = 101.3 - 84 - 0.1

    pO2 = 17.2 kPa
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