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March 28, 2017

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An ideal monatomic gas expands isothermally from 0.590 m3 to 1.25 m3 at a constant temperature of 670 K. If the initial pressure is 8.00 104 Pa.

(a) Find the work done on the gas.
Answer is in J

(b) Find the thermal energy transfer Q.
Answer is in J

  • Physics - ,

    (a) Work out = Wout
    = Integral of P dV = nRT/V *dV
    = nRT*ln(V2/V1)

    The initial pressure and ideal gas law will tell you what n is

    (b) Qin = Wout , since the internal enery (and T) do not change

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