Kyoko asked in Science & MathematicsPhysics · 8 months ago

a diatomic gas at 333K has an internal energy of 2930J. how many moles of gas are present?

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  • 8 months ago
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    P * V = n * R * T

    The unit of pressure is N/m^2. The unit of volume is m^3

    P * V = N * m

    This is work or energy.

    n * R * T is the energy

    R = 22.4 liters ÷ 273˚

    R * T = 22.4 * 333 ÷ 273 = 7,459.2 ÷ 273

    n = 2,930 * 273 ÷ 333 = 799,890 ÷ 333

    The number of moles is approximately 2,402.

    I hope this is helpful for you.

    • ...Show all comments
    • electron1
      Lv 7
      8 months agoReport

      According to a table in my physics book, the value of R is 8.31 J/(mol * ˚K)
      2,930 = n * 8.31 * 333
      n = 2,030 ÷ 2,767.23
      This is approximately 0.734 mole.
      I hope this is correct.

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