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# Configurational Entropy

Ludwig Boltzmann killed himself so that we could do thermodynamics by enumerating the states of a system. Learn to count, the most important skill in statistical mechanics.

If helium gas fills a spherical balloon of radius \(16.0 \text{ cm}\) at \(25.0 ^\circ\text{C}\) and \(1.013 \times 10^5 \text{ N/m}^2,\) what is the approximate total kinetic energy of the helium atoms in the balloon?

The value of the Boltzmann constant \(k_B\) is \(1.38 \times 10^{-23} \text{ J/K}\) and the value of the universal gas constant \(R\) is \(8.31 \text{ J/mol}\cdot\text{K}.\)

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