free energy: Quick Facts

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Graph of free energy of formation (delta Gf degree) for rare-earth elements from scandium to lutetium. Values generally decrease with atomic number, with spikes at europium and ytterbium.

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Helmholtz free energy Gibbs free energy excess Gibbs free energy energy potential energy kinetic energy mechanical energy binding energy internal energy zero-point energy radiant energy radiation combustion geothermal energy

Electric power lines against sunset (grid, power, wires, electrical, electricity)

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