dacid asked in Science & MathematicsChemistry · 11 months ago

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

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  • 11 months ago
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    internal energy diatomic gas:

    U = (5/2) nRT

    U = internal energy

    n = number of moles

    R = gas constant = 8.314 J/mol・K

    T = temperature (Kelvin)

    rearranging to solve for n,

    n = (2/5) E / RT

    = (2/5) x {2930 J / [(8.314 J/mol・K) x (333 K)]}

    = 0.423 mole …. to 3 sig figs

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