In a 1985 paper in the Journal of Chemical Thermodynamics, the standard molar entropy of chalcopyrite, CuFeS

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In a 1985 paper in the Journal of Chemical Thermodynamics, the standard molar entropy of chalcopyrite, CuFeS2, is given as 0.012 J mol-1 K-1 at 5 K. Use this value to estimate the number of microstates for one picogram (1 x 10-12 g) of CuFeSat 5 K and 1 bar. Report your answer in the manner described in Exercise 3.

Exercise 3

The standard molar entropy of H2(g) is S° = 130.7 J mol-1 K-1 at 298 K. Use this value, together with Boltzmann’s equation, to determine the number of microstates, W, for one mole of H2(g) at 298 K and 1 bar. Reflect on the magnitude of your calculated value by describing how to write the number in decimal form.

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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